一年级下册十几减8、9练习题

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一年级数学下册第二单元20以内的退位减法 1-5课时十几减9 练习二十几减8 十几减7、6 练习三

一年级数学下册第二单元20以内的退位减法 1-5课时十几减9 练习二十几减8 十几减7、6 练习三
请你们先自己算一算。
返回
如何计算13-6=? 13-7=? 方法一
平十法
13-6= 7
13-7= 6
33
34
10
10
返回
如何计算13-6=? 13-7=? 方法二
破十法
13-6= 7 3 10
4
13-7= 6 3 10
3
返回
如何计算13-6=? 13-7=? 方法一
想加算减
6+7=13
13-6=7
返回
课堂小结
这节课你们都学会了哪些知识?
计算十几减7、6可以用 想加算减 平十法 破十法……
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课后作业 课本: 第14页做一做第3题
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人教版 数学 一年级 下册
2 20以内的退位减法
练习三
复习旧知 课堂小结
巩固练习 课后作业
复习旧知
11 - 9 =2 12 - 9 =3 13 - 9 =4 14 - 9 =5
返回
我们一共收了16个胡 萝卜,分给你9个。
你还剩几个?
16 - 9 = 7 (个) 返回
今天我一共要编14个, 已经编好了9个。
还要编几个? 16 - 9 = 7 (个)
返回
我们一共有 10个男生。
老师让相邻两个男 生之间站一个女生。
一共可以站进多少个女生? 10 - 1 = 9 (个)
返回
返回
8+5= 13 13-8= 5
8+3= 11 11-8= 3
8+6= 14 14-8= 6
说说你有什么发现?
返回
课堂小结
这节课你们都学会了哪些知识?
计算十几减8可以用 想加算减 平十法 破十法……

一年级下册100道口算题大全(全册各类完整)

一年级下册100道口算题大全(全册各类完整)

口算练习- 十几减918−9=16−9=7+8−9=8+8−9=8+7−9= 18−9−4= 17−9+8= 17−3−9= 12−9−2= 16−9+7= 15−3−9= 14−9−3= 18−9+7= 12−9+2= 11−9+6= 14−9+5= 15−9−3= 14−2−9= 18−9−5= ( )+9=1411−9= 17−9= 14−9= 13−9=12−9= 4+8−9= 8+3−9= 7+7−9=7+5−9= 7+6−9= 4+7−9= 7+4−9=5+6−9= 8+4−9= 5+7−9= 6+5−9=8+5−9= 6+6−9= 3+8−9= 13−9−2= 13−9+2= 15−9+4= 12−9+6= 17−2−9= 13−9−4= 16−2−9= 16−9+8= 13−2−9= 13−9+3= 18−9−6= 17−5−9= 18−2−9= 15−4−9= 12−9−3= 14−3−9= 11−9+4= 11−9+5= 18−5−9= 17−9+5= 16−3−9= 14−9−4= 18−9−9= 17−9−5= 17−9−4= 18−9+2= 14−9−2= 15−2−9= 15−9+8= 17−9+3= 17−9−6= 12−9+3= 14−9+6= 15−9−4= 18−9+4= 11−9+8= 15−9−2= 18−9+8= 14−9+8= 11−9+2= 16−9−3= 18−9+5= 13−9+7= 14−9−5= 17−9−7= 15−9+6= 18−9−7= 11−9+3= 14−9+7= 16−9−5= 14−9+4= 17−9+4= 16−9+3= ( )+9=13 ( )+9=18 ( )+9=16 ( )+9=12 9+( )=11 9+( )=14 9+( )=15 9+( )=1811−8= 17−8= 16−8= 15−8= 4+9−8=9+5−8= 3+9−8= 7+6−8= 6+6−8= 7+4−8=9+6−8= 9+2−8= 6+7−8= 5+9−8= 9+3−8=7+9−8= 5+7−8= 7+7−8= 9+7−8= 9+4−8= 19−3−8= 14−8+6= 14−8+2= 16−8−5= 12−8+2= 12−8+3= 11−8−2= 12−8−2= 15−8−6= 12−8+5= 13−8−4= 17−8−2= 14−8−6= 16−8−8= 13−8−5= 15−8−5= 14−8+9= 11−8+3= 13−8+2= 11−8+2= 16−8−4= 13−8−3= 13−8+5= 19−6−8= 19−5−8= 16−8+3= 11−8+7= 16−8−2= 17−5−8= 17−8−9= 16−8+6= 15−8−4= 12−8+9= 15−8+9= 19−8−8= 14−8−5= 16−2−8= 17−8−3= 17−8−5= 13−8+3= 19−4−8= 16−8+4= 17−8−7= 15−8+6= 16−8+7= 12−8−3= 17−8+9= 15−3−8= 17−8+6= 15−8+3= 14−3−8= 12−8−4= 17−8+7= 12−8+7= 17−8−4= 14−8−2= 17−8+3= 11−8−3= 14−8−4= 16−8−7= 17−4−8= 16−8+2= 13−8+9= 13−2−8= 12−8+4= 15−8−7= 11−8+9= 15−8+2= 17−8+5= 17−2−8= 15−2−8= ( )+8=17 ( )+8=16 ( )+8=11 ( )+8=13 ( )+8=14 8+( )=13 8+( )=15 8+( )=11 8+( )=1213−6= 16−7= 15−7= 3+9−6= 6+8−7=5+7−6= 9+2−6= 9+3−6= 8+6−7= 2+9−6=8+3−7= 4+9−6= 9+5−6= 5+9−6= 13−7−6= 14−6+7= 16−7−4= 12−7−5= 15−7+3= 12−6−6= 15−7+4= 14−3−6= 11−6+9= 15−7+8= 14−3−7= 13−7+6= 13−6+5= 13−7+5= 14−6+3= 14−6−3= 13−7+4= 15−7+9= 15−6+7= 12−7+4= 12−6−2= 12−6+2= 11−6+8= 18−3−6= 16−3−7= 18−4−6= 15−6−7= 11−6+4= 15−6+2= 18−6−6= 12−7−2= 18−7−7= 11−6+2= 14−7−2= 15−6−8= 14−6+9= 14−7+5= 14−7+4= 13−7−4= 13−6+9= 15−2−6= 13−6+7= 16−7−6= 11−7+9= 14−2−6= 15−4−6= 19−7−6= 16−7−3= 12−7+6= 18−7−6= 14−6+8= 13−7+8= 14−7+8= 14−7−3= 14−6−7= 13−7−2= 17−2−6= 12−6+9= 15−6+4= 12−6−4= 18−5−6= 11−6−3= 13−6+8= 14−6−2= 11−7+3= 12−7+8= 15−6+9= 11−6−5= 11−6−2= 15−6−4= 13−6−7= 15−6+3= 13−7−3= 11−7+4= 14−7−5= 16−7+9= ( )+6=12 ( )+7=16 ( )+7=15 ( )+7=14 ( )+6=13 6+( )=11 6+( )=14 6+( )=15 7+( )=11 7+( )=1614−5= 12−3= 12−5= 11−5= 12−4=4+7−2= 8+4−5= 4+8−3= 7+4−3= 9+3−5=3+8−4= 4+7−3= 9+2−3= 9+2−5= 2+9−4=8+4−3= 7+7−5= 7+6−4= 9+3−4= 8+3−2=7+4−5= 5+7−3= 2+9−3= 8+5−4= 9+2−4=3+9−5= 3+8−5= 13−4+5= 14−5−9= 15−4−2= 12−3+8= 14−5+3= 13−5−2= 14−5−6= 17−6−3= 12−5−7= 12−5+9= 14−5−3= 11−5−3= 11−2−8= 19−8−4= 11−2−9= 17−4−5= 14−5−4= 16−4−4= 13−5−7= 11−4−7= 13−4+2= 16−2−5= 18−5−4= 18−6−3= 14−5−5= 13−4+9= 13−4−2= 13−5−3= 18−6−4= 12−4+9= 16−3−4= 12−3+4= 13−5−6= 11−2+5= 13−5−4= 11−5+2= 18−7−5= 16−3−5= 18−5−5= 12−4−7= 11−2−4= 12−5−3= 15−3−4= 12−5+7= 12−3−4= 11−4+3= 13−4+8= 12−4+8= 11−2−7= 19−8−5= 11−5+3= 11−5−5= 19−7−4= 15−2−4= 14−5+7= 11−2+4= 14−5+9= 11−4+6= 11−2−2= 12−5+6= 17−6−4= 17−6−2= 14−5+2= 11−3−5= 19−6−5= 12−3−8= 11−4+9= ( )+4=12 ( )+3=12 ( )+4=11 5+( )=14 3+( )=11 3+( )=12姓名:口算练习- 比大小9 11−5 13−4 9 6 12−5 11−8 9 6 16−8 9 13−6 13−8 6 8 12−3 9 15−7 8 18−9 6 13−8 9 12−4 9 14−7 8 14−5 12−5 8 13−9 9 13−6 8 8 13−5 12−7 8 11−6 87 11−2 15−9 8 16−8 9 8 13−9 8 15−98 12−6 13−9 8 11−8 6 6 14−7 13−5 7 7 16−9 8 17−8 6 17−9 12−3 8 11−9 8 6 13−4 7 12−6 14−6 9 6 12−7 12−7 7 13−7 9 9 12−5 9 12−9 12−9 7 7 18−9 14−7 7 8 11−8 15−8 6 9 17−8 6 13−7 14−6 6 16−8 7 8 12−7 9 12−6 9 15−9 12−8 8 6 12−6 6 14−9 12−9 9 9 12−3 6 16−7 9 12−8 8 16−7 17−9 8 14−6 8 8 12−8 15−9 6 7 15−8 7 11−4 11−3 7 15−6 7 11−3 8 6 11−4 9 15−6 14−5 7 7 13−5 6 15−7 9 16−7 7 11−7 8 11−5 7 17−9 15−6 9 8 17−9 15−7 7 11−5 6 6 14−8 9 13−4 8 14−7 7 11−3 12−3 6 15−8 8 9 14−5 15−7 9 7 15−6 12−3 9 11−7 6 7 11−8 8 13−8 7 12−5 16−7 7姓名:口算练习- 20以内的加减法8+5= 7+6= 6+8= 7+5= 3+9=8+7= 9+8= 9+4= 5+8= 4+7=5+6= 16−5= 1+11= 4+15= 12−4=16−9= 12+6= 11−2= 19−2= 12−9=3+15= 18−5= 18−1= 15−3= 12+7=4+13= 2+16= 11−3= 14−1= 11+4=18−9= 19−7= 1+12= 12+2= 11−8=5+12= 4+12= 16+1= 7+12= 16−1=15−8= 12−3= 15+3= 1+15= 13−2=14−7= 18−6= 19−6= 1+18= 13−4=17−9= 12−7= 17−2= 6+11= 16−3=16+3= 14+3= 16+2= ( )−7=8 ( )−9=8 ( )−5=6 ( )−7=7 ( )−6=5 ( )−9=6 ( )−9=5 ( )−8=7 ( )−8=4 ( )−4=9 ( )−5=9 ( )−6=9 ( )−8=3 ( )+4=13 ( )+9=18 ( )+6=13 ( )+7=11 ( )+6=15 ( )+5=11 ( )+8=16 ( )+9=14 ( )+8=17 ( )+3=12 ( )+8=12 ( )+9=16 ( )+4=12 ( )+9=12 ( )+4=11 6+( )=12 9+( )=17 6+( )=13 8+( )=15 11−( )=8 7+( )=16 15−( )=9 13−( )=8 13−( )=9 7+( )=13 16−( )=8 16−( )=7 7+( )=15 11−( )=696 91 51 57 51 15 64 24 49 46 42 24 32 37 10 19 37 36 80 30 91 92 62 22 52 42 26 25 76 67 25 22 71 77 20 21 40 44 11 15 89 69 77 87 85 45 96 84 97 52 54 56 41 14 16 61 95 35 65 56 31 31 26 62 50 40 93 63 92 92 54 48 29 89 59 14 78 58 68 6817 6216 1610 5112 8219 7963 6674 7481 1239 9473 7562 7088 2844 4932 9325 2859 9557 7543 4671 4119 964517246882271978625986583394906532854913491434388570298861315685319010958225942769594484382346852396321996377239551447756354284883322775232272306974723175415757口算练习- 100以内的数比大小姓名:班级:姓名:口算练习- 整十数加一位数及相应的减法7+90= 5+60= 50+5= 8+40= 3+20=80+4= 20+2= 7+30= 90+6= 20+4=9+70= 60+3= 8+30= 6+60= 57−7=90+8= 69−9= 80+9= 2+50= 93−90=97−90= 92−90= 68−60= 85−80= 83−80=48−40= 82=( )+2 63=3+( ) 88=8+( ) 8=98−( ) 59=( )+9 83=3+( ) 43=3+( ) 6=( )−90 93=3+( ) 68=( )+8 40=( )−7 74=( )+4 4=( )−30 23=( )+3 37=7+( ) 8=78−( ) 7=( )−70 90=( )−2 3=53−( ) 84=( )+4 37=( )+7 84=80+( ) 50=54−( ) 78=70+( ) 60=63−( ) 68=( )+60 37=( )+30 37=30+( ) 39=30+( ) 70=79−( ) 69=60+( ) 22=20+( ) 78=( )+70 90=98−( ) 70=75−( ) 73=( )+70 48=( )+40 40=43−( ) 90=95−( ) ( )−60=7 ( )−4=90 ( )−9=50 ( )+2=72 ( )+7=27 ( )−6=60 ( )−50=8 ( )+9=49 ( )−70=9 ( )−6=40 ( )+5=95 ( )−50=6 ( )+90=93 ( )+90=99 96−( )=6 2+( )=62 35−( )=5 8+( )=38 66−( )=6 97−( )=7 7+( )=27 5+( )=85 59−( )=9 43−( )=3 85−( )=5 68−( )=8 93−( )=3 30+( )=39 80+( )=85 50+( )=53 83−( )=80 30+( )=36 48−( )=40 40+( )=45 80+( )=84姓名:口算练习- 整十数加、减整十数90−60= 50−20= 50+10= 10+80= 70−10=40+10= 60−40= 70−60= 80−10= 90−10=80−70= 80−50= 30+10= 60−50= 90−40=50−10−30= 60−10−40= 50−20−20= 20+20+10= 80−60−10= 70+10+10= 30+30+10= 40+10+20= 90−20−70= 80−20−40= 10+20+30= 40+10+30= 30+30+20= 80−70−10= 60−50−10= 10+10+70= 50−10−10= 70−50−10= 20+10+30= 60+10+10= 50+20+20= 10+20+50= 80−10−60= 90−20−60= 60−10−20= 90−40−20= 70−40−10= 80−50−20= 70−50−20= 90−10−70= 20+60+10= 80−10−40= 90−10−30= 90−40−40= 10+10+10= 70−60−10= 30+20+30= 80−20−30= 10+60+20= 70−10−20= 30+10+30= 40−20−20= 10+40+10= 60−40−20= 20+50+20= 50−30−20= 90−20−20= 90−30−50= 90−10−50= ( )+10=80 ( )+40=80 ( )−20=70 ( )+30=60 ( )+20=60 ( )−10=30 ( )+20=70 ( )−40=40 ( )−10=40 ( )+30=40 ( )+30=90 50−( )=20 40+( )=70 30−( )=10 10+( )=60 80−( )=60 40−( )=30 90−( )=10 50+( )=60 10+( )=50 20+( )=40 70−( )=10 50+( )=80 30+( )=80 50−( )=40 90−( )=20 20+( )=60 80+( )=90 10+( )=30 80−( )=70 60−( )=30 90−( )=50 50+( )=70 70−( )=60 40+( )=60 20+( )=30姓名:口算练习- 两位数加一位数、整十数(不进位)5+82=77+2=23+3=81+6=74+3=91+2=2+86=62+2=6+93=82+6=8+81=43+6=35+3=4+75=31+5=5+92=82+7=51+8=66+2=3+33=91+7=52+5=4+91=81+3=71+6=62+4=53+5=32+5=32+3=2+45=92+2=53+20=13+50=40+36=56+30= 37+50=42+30=55+30=20+72=25+20= 60+39=48+40=31+30=20+74=70+23= 20+21=80+11=70+25=30+37=65+30= 55+20=48+20=45+20=31+50=20+77= 47+20=50+28=50+45=30+48=41+30= 20+58=38+50=80+13=60+36=38+40= 30+65=44+30=50+37=23+3+3=23+2+3= 65+2+2=3+62+3=2+42+5=2+21+3=91+2+4= 23+2+40=25+60+4=4+15+70=3+52+30=63+20+4= 20+45+4=11+4+40=40+14+5=3+23+20=40+21+3= 4+23+40=30+12+3=21+6+70=11+30+4=12+7+50= 33+20+4=2+16+50=36+40+3=5+11+80=5+22+70= 25+50+20=30+15+30=15+40+20=33+20+20=20+31+30=口算练习- 两位数加一位数(进位)7+36=9+11=8+34=27+4=86+4=9+75=17+7=4+39=64+7=5+69= 49+7=85+5=59+6=78+4=6+55=2+88=55+8=2+58=13+7=62+8= 36+4=58+4=49+9=88+2=55+5= 65+5=7+14=6+27=3+77=52+8= 68+8=8+42=8+58=48+2=69+8=2+68=7+25=83+7=77+5=46+7= 61+9=87+9=6+75=36+5=59+2=7+39=5+37=37+3=39+8=5+89= 35+2+4=72+2+9=82+4+9=14+6+8=5+12+9= 14+4+3=68+3+3=2+16+5=8+74+2=5+42+5= 2+46+5=3+67+6=8+84+7=51+9+7=9+88+2= 67+6+3=4+24+7=58+5+5=45+9+4=26+4+6= 9+72+5=3+51+7=4+72+5=52+4+8=14+5+3= 2+59+3=8+32+6=29+4+3=61+2+8=76+7+5= 7+33+6=74+5+5=7+36+40=7+28+50=8+47+10= 7+35+30=8+79+10=48+3+40=6+24+30=17+7+50= 61+9+20=28+9+30=5+25+50=5+26+30=8+49+10= 58+8+10=15+8+50=45+9+40=5+17+70=39+5+20=88−2=29−3=77−5=99−7=96−4=76−3=63−2=64−3=98−2=98−3=29−2=27−4=35−2=49−7=48−5=98−5=46−2=58−5=65−4=76−5=47−5=99−4=79−6=59−2=35−4=36−5=89−4=77−50=41−20=62−40= 66−30=78−50=91−40=83−30=62−50= 97−30=83−50=73−40=69−30=74−40= 65−40=84−60=89−70=68−40=94−80= 93−40=74−60=95−40=84−70=31−20= 69−40=94−30=62−20=93−60=76−40= 29−3−3=59−5−2=89−6−2=27−4−2=97−50−2= 98−5−10=94−70−2=59−5−20=88−5−40=87−40−4= 85−4−20=56−5−30=98−70−4=64−2−20=47−30−6= 88−2−30=54−3−10=69−2−20=56−40−2=75−4−30= 96−80−3=76−40−2=55−20−4=39−5−20=67−2−40= 87−4−70=77−4−50=95−30−3=98−6−40=85−2−60= 95−4−30=55−3−10=85−40−2=39−20−4=74−20−3= 75−40−2=84−2−20=76−4−60=26−3−10=58−20−2= 75−20−30=63−20−20=92−30−30=82−20−40=95−60−20=34−7=50−4=63−5=48−9=93−9= 66−9=20−9=50−6=83−8=82−5= 94−7=30−7=27−9=82−3=32−6= 90−8=53−8=81−8=80−6=21−2= 58−9=60−9=64−6=93−5=23−6= 94−6=56−7=51−4=80−7=21−3= 91−9=21−5=61−7=91−5=80−2= 90−2=96−9=93−7=74−9=71−3= 36−7=83−9=53−7=71−7=20−6= 82−9=41−9=55−9=43−4=54−5= 70−4=23−5=75+20−8=30+50−8=21+70−6= 34+20−6=81−30−3=22+70−9=26+70−9=26+60−9= 70−50−5=91−70−3=23+20−7=42+20−5=44+50−9= 92−40−3=92−50−7=40+40−6=92−40−4=21+60−2= 34+50−9=31+20−6=94−30−6=64−40−7=45+40−8= 91−20−5=93−20−7=62−20−5=68+30−9=90−50−1= 92−20−8=20+20−9=21+70−7=96−40−9=20+40−6= 30+40−4=72−20−7=63+30−9=51+20−7=25+40−6= 92−60−9=54−30−9=90−40−4=20+30−5=20+30−2= 20+30−8=42−20−9=31+20−4=84−40−8=60+30−5=姓名:口算练习- 比大小89 78+2 8+35 44 80 77+7 8+64 76 20 17+5 26+4 38 95−7 85 3+29 37 79−8 69 60−6 53 62−4 59 36−7 29 79−9 66 57+8 66 62 53+7 7+35 42 4+59 66 33 26+4 8+22 31 67 6+54 77+5 81 87 76+7 43 6+39 29−2 17 82 77+7 80−1 74 94 8+84 8+48 56 20 6+15 9+74 80 8+52 69 49+7 54 37 7+26 66−1 56 96−2 85 66 3+57 75+5 88 72 61+9 92−1 88 28+4 34 8+72 85 25 6+17 4+49 55 25−2 16 69+3 76 9+39 41 77 65+8 67 57+8 94 3+88 8+78 81 66−3 54 80−3 76 45−6 33 57+3 66 75+5 81 4+59 67 23 19+7 95−2 84 54+6 60 32−4 24 54+9 66 7+35 46 4+16 23 74−4 66 72−30 45 91−30 62 88−40 34 66−50 13 42−30 15 57−10 48 54−20 21 55−10 49 93−70 27 97−30 68 76−40 21 86−50 22 82−20 62 63−20 37 46−10 39 53−30 13口算练习- 比大小55−40 15 9+13 13+983−6 83−1 69+7 7+69 81−7 81−704+877+3465+89+6274−6姓名:87+4 7+49 49+7 94−6 94−334+7 14+7 7+14 47+7 7+478+65 8+58 58+8 27+8 8+2762+9 24+9 9+24 46+8 8+4674−60 82−60 82−6 81−30 81−3姓名:口算练习- 认识小括号7+(4+8)= 8+(8+8)= 8+(9+6)= 8+(8+9)= 4+(5+3)= 5+(4+8)= 7+(9+6)= 3+(4+7)= 3+(3+7)= 7+(7+9)= 3+(8+3)= 5+(8+8)= 9+(4+6)= 4+(9+4)= 4+(6+4)= 8+(6+3)= 33−(9−8)= 19−(7−6)= 69−(7−2)= 76−(6−2)= 81−(8−3)= 25−(6−5)= 15−(5+2)= 16−(3+6)= 79−(9−6)= 13−(2+7)= 93−(8−5)= 67−(9−6)= 18−(5+4)= 41−(6−4)= 82+(12−6)= 12+(12−8)= 31+(11−5)= 27−(12−9)= 41+(12−8)= 29−(8+12)= 16−(11−8)= 43+(8+22)= 37+(68−8)= 76−(14+6)= 76+(24−4)= 36−(11−5)= 82−(71+9)= 35+(43+7)= 18+(82−2)= 77−(47+3)= 22+(11+9)= 41−(13−8)= 97−(46+4)= 38−(13−8)= 31−(12−7)= 87−(5+35)= 70+(11−7)= 74−(44+6)= 40+(12−9)= 50+(12−6)= 19+(84−4)= 98−(45+5)= 92−(7+23)= 83+(14−8)= 62−(16+4)= 86−(13−7)= 82+(11−7)= 61+(33−3)= 79−(22+8)= 24−(15−8)= 22+(76−6)= 56−(25+5)= 28+(2+38)= 23−(14−6)= 83+(13−9)= 33+(12−2)= 31+(14−8)= 41+(31+9)= 57−(38+2)= 14+(3+47)= 46−(12−6)= 31+(12−8)= 65+(35−5)= 21+(46+4)=姓名:口算练习- 认识小括号75−(58+2)=57−(13+7)=78−(67+3)=50+(13−7)= 62+(11−8)=43+(14−8)=72−(16−7)=61−(15−6)= 29−(15−6)=55+(11−8)=27+(52+8)=43−(27−20)= 16−(66−60)=35−(62−60)=26−(75−70)=48−(46−40)= 79−(31−30)=54−(54−50)=98−(46−40)=64−(67−60)=姓名:口算练习- 100以内的进位加法和退位减法6+64= 4+58= 3+27= 76−9= 9+47=5+89= 6+36= 21−5= 32−9= 31−6=71−6= 8+12= 4+56= 83−8= 9+31=54+6= 3+49= 70−2= 24−8= 40−2=77+3= 3+28= 80−9= 70−4= 83+9=7+77= 62−6= 43−9= 13−6= 41−5=3+67= 4+16= 31−4= 35+5= 95−8=35−7= 6+18= 68+2= 33−8= 23+7=6+66= 9+21= 12−9= 3+55+2= 26+6+3= 8+44+3= 3+19+5= 46+2+9= 44+8+7= 4+11+6= 4+89+4= 8+81+9= 85+4+8= 4+35+7= 2+28+4= 62+9+6= 7+11+9= 7+36+50= 59+8+30= 28+8+60= 19+7+70= 83 1+79 45−9 39 23 13+9 87 76+9 52−3 48 40−9 34 44−5 38 76−9 62 46−9 34 8+13 24 85−6 71 51−8 44 20−4 12 77−8 61 35−6 24 76+4 88 89 6+79 61−7 53 36−7 27 20 18+8 80−8 72 21−7 17 5+19 24 29+7 30 33−4 28 8+73 89 70−2 61 78 67+4 87+7 96 21−7 15 53−8 42 23−5 14 93−5 81 36 24+7 9+25 36 92−3 85 7+63 70 83 8+72 66 58+3姓名:口算练习- 100以内的连加连减、加减混合7+9−8= 9+3−8= 16−5−7= 35+8+5= 17−9−5= 19−7−4= 15−6+8= 5+21+9= 17−8+6= 11−2−9= 69−5−2= 3+77+2= 4+85+2= 15+3+9= 67−3−3= 46+5+8= 8+21+4= 77+5+2= 4+83+4= 12−6+5= 23+3+4= 4+13+8= 4+45+6= 7+81+2= 3+62+7= 12−9+7= 12−6+7= 63+4+2= 4+56+9= 6+71+2= 47−6+2= 43−2+5= 2+67+4= 32+5+2= 7+(5+3)= 7+(4+5)= 4+(6+4)= 7+(6+3)= 67−5+30= 6+53+20= 18+6+10= 28+4+40= 11+2+50= 6+13+50= 40+13+2= 21+30+6= 94−60−2= 87−70−4= 68−4−50= 48+8+10= 20+21+4= 13+30+6= 66+30+2= 34+7+50= 4+35+60= 85−3+10= 20+31+3= 91−70+2= 57+30+2= 37−5+50= 6+17+50= 16−(3+6)= 10+30+40= 65−40+50= 95−20−40= 70+20−20= 68−50+40= 30+20−10= 40+20−20= 27+20+20= 42+20+20= 70+10−40= 90−80−10= 30+21+30= 63−30+20= 30+10−40= 70−10+10= 40+10−20= 20+70−60= 98−80+40=口算练习- 100以内的连加连减、加减混合48+(12−2)= 62−(17+3)= 80+(17−8)= 12−(38−30)= 93−(36−30)=80+(12−6)=30+(12−3)=78−(6+64)=72−(55−50)=23−(79−70)=90+(13−5)=22+(78−8)=20+(12−4)=82−(20+10)=77−(99−90)=姓名:14+(3+77)=90+(11−7)=94−(10+50)=24−(73−70)=84−(20+60)=。

苏教版一年级数学下册单元练习 第一单元

苏教版一年级数学下册单元练习 第一单元

14- 9 = 5
2. 算一算,填一填。
9 17 9
2
16 9
3 12
3. 算一算,连一连。
4. 在 里填“+”或“-”。
5 + 7=12
12 - 4=8
16 - 7=9
6 + 5=11
13 - 6=7 14 - 8=6
5. 看图列式计算。 (1)
11 - 4 = 7
6. 王大爷一共养了12只鸡。
5. 小兔子采蘑菇。(连一连)
6. 小蜜蜂采花蜜。
13-9 > 3 12-9 < 4 17-9 < 9 14-9 < 6
15-9 < 7 16-9 < 8 11-9 = 2 18-9 = 9
7. 看图列式计算。 (1)
13 - 9 = 4
(2)
16 - 9 = 7
8. 小朋友们排队做操。小丽这一列共有16人,小丽的前面有9人,小丽的后面有 多少人?
△=( 9 )
□=( 14 )
解析:通过第一道算式,可以用17-8,得到 △=9。把 △=9代入第
二道算式,得 □-9=5,即可得到 □=14。
第5课时 练 习 二(1)
1. 比一比,算一算。
5 5
7 7
2. 找朋友。(连一连)
5 5
4 4
3. 看谁算得又对又快。
14-8= 6 11-8= 3 12-8= 4 8+4= 12 14-8+7= 13 7+7-8= 6 13-8-2= 3 3+9-7= 5
7+8-6= 9 11-4+9= 16
13-6= 7 11-2= 9 13-9= 4 11-3= 8
4. 从“1、2、4、6”中每次选三个数,填写下面的算式。

人教版一年级数学下册第二单元《十几减9》同步练习题(含答案)

人教版一年级数学下册第二单元《十几减9》同步练习题(含答案)

人教版一年级数学下册第二单元《十几减9》同步练习题(含答案)班级:___________姓名:___________得分:___________1、直接计算。

12-9=()11-9=()19-9=()2、填得数。

7+()=16 4+()=13 3+()=12 14-9=()15-9=()17-9=()3、圈一圈,算一算。

-9 =-9 =4、在里填“>”、“<”或“=”。

13-9 4 15-9 5 14-9 419-9 9 12-9 11-9 18-9 17-95、想一想,算一算。

11-9= 12-9= 16-9=2+9= 3+9= 7+9=6、想一想,填一填。

11-9=1+()13-9=3+()14-9-5=()18-9-1=()7、看一看,填一填。

13个=15个=8、一共有17个小熊,第一排有9个小熊,第二排有几个?= (个)参考答案1.答案:6 9 7【解析】从9加几想到十几减9.2.答案:9 9 9 5 6 8【解析】主要考察学生对从加法想到十几减9的退位减法方法的掌握。

3.答案:13-9=414-9=5【解析】考察学生对圈一圈,数一数来计算十几减9方法的掌握情况。

先数全部多少个,圈出9个,剩下的就是十几减9的结果。

4.答案:= > >> < >【解析】先计算十几减9,然后在进行比较。

5.答案:2 3 7 11 12 16【解析】从左开始依次计算6.答案:1 1 0 8【解析】11-9=1+()和13-9=3+()可以看成十几中的整十先减九再加十几的个位数。

也可以先只计算出等号左边的差等于多少再减去等号右边那个数。

14-9-5=()和18-9-1=()可以直接一步一步减这几个算式是十几减9的其中两种方法的回顾。

7.答案:13-9=4【解析】有9个,一共13个,问号就是求9个再需要多少个等于13。

所以是求13减9等于多少。

关键在于理解题意。

13-9=4蝴蝶的同样的道理:即15-9=6。

人教版一年级下册数学第二单元 20以内的退位减法 测试卷附答案【考试直接用】

人教版一年级下册数学第二单元 20以内的退位减法 测试卷附答案【考试直接用】

人教版一年级下册数学第二单元 20以内的退位减法测试卷一.选择题(共6题,共12分)1.十几减8的减法,得数就是被减数的个位数加上()A.2B.3C.42.草地上有16只小鸡,跑了9只,还有()只。

A.6B.7C.83.两个小组一共有15人,第一小组有7人,第二小组有多少人?列式计算正确的是()。

A.15-7=8(人)B.15-8=7(人)C.15-8=6(人)D.7+8=15(人)4.16个同学去打扫卫生,其中7个同学去擦玻璃,还有()个同学在扫地。

A.7B.8C.95.得数最大的算式是()。

A.14-9B.13-9C.12-96.明明有14颗糖,佳佳有7颗糖,__________?如果列式为14-7=7(颗),那么横线上的问题可能是( )。

A.两人共有多少颗糖B.还剩多少颗糖C.佳佳比明明少多少颗糖二.判断题(共6题,共12分)1.画一画,第一行画12个,第二行画,使比多4个.下面的画法是正确的。

()2.比11少4的数是8。

()3.小刚家有16只鸡,已知母鸡有7只,那么公鸡有9只。

()4.妈妈和小明一共花了14元,其中小明花了4元,那妈妈花了10元。

()5.被减数是18,减数是9,差是9。

()6.被减数是13,减数是8,差是5。

()三.填空题(共6题,共27分)1.想一想,□、○、△各表示什么数。

□+○=16○-△=3△+4=10□=_____○=_____△=_____2.比大小,填“>”“<”或“="。

14-5_____8 13-6_____6 17-6_____912-7_____6 15-8_____7 12-8_____63.12-9=_____,想:9加_____得12,所以12减9得_____。

也可以这么想:_____减9得1,1加_____得3,所以12减9得_____。

4.填方框。

□+7=16 15-□=5 8+□=14□-10=4 10+□=15 10-□=75.在括号内填上最大的数。

人教版一年级数学下册第2单元《十几减9》课时练习题(含答案)

人教版一年级数学下册第2单元《十几减9》课时练习题(含答案)

人教版一年级数学下册第2单元《2.1十几减9》课时练习题(含答案)一、填空题1.比多( )个。

比少( )个。

2.想一想,算一算。

(1)15-9=________,想:9加________等于15,15减9等于________(2)11-9=________12-9=________16-9=________2+9=________3+9=________7+9=________12-9=________11-9=________19-9=________3.填“>”“<”或“=”。

13-9________4 15-9________5 14-9________419-9________9 12-9________11-9 18-9________17-94.华华做了13朵红花,东东做了9朵。

东东至少还要做( )朵,才能超过华华。

二、判断题-=,遮住的数是0。

( )5.996.15-9=6( )7.16-9=9+7。

( )8.13与9的差是4。

( )9.小白兔有16个萝卜,它吃了9个,还剩下6个。

( )三、选择题-=()。

10.119A.2 B.4 C.511.16-9-4=()。

A.3 B.6 C.9 D.1012.13-9-2=()A.1 B.2 C.3 D.4 13.13-9=()A.4 B.9 C.14 D.5 14.小红有17张卡片,小明有9张卡片,小红比小明多()张卡片。

A.8 B.9 C.10四、连线题15.把算式和得数连起来。

(1)9+5A.6(2)15-9B.15(3)6+9C.14五、计算16.看谁算得快。

13-9=12-9=15-9=17-9=16-9=11-9=14-9=18-9=六、解决问题17.根据图片所示内容列出算式并计算出结果。

18.移走了几架飞机?(架)19.小轿车里有多少人?(人)20.妈妈有红扣子18颗,白扣子9颗,黑扣子8颗,红扣子比白扣子多多少颗?参考答案1.7 72. 6 6 6 2 3 7 11 12 16 3 2 103.=>>>>>4.55.×6.√7.×8.√9.×10.A11.A12.B13.A14.A15.16.4;3;6;87;2;5;917.8人18.18-9=9(架)19.14-9=520.18-9=9(颗)。

一年级下册十几减8、9练习题

一年级下册十几减8、9练习题

年级: 一年级 第一讲:十几减8、9 学员姓名:学习目标:1、能够比较熟练地口算十几减8、9的退位减法。

2、初步会用加法和减法解决简单元问题。

基础练习:一、计算。

例题:15-9=习题:12-9= 17-9=11-9= 14-9=1、 15-8= 13-8=2、认真计算5+7-9= 16-8-6= 16-9+3= 11-9+6= 10-5+8= 13-8-4=5 11.分解法:想15分成10和5, 用10-9= 1, 1 + 5 = 62.想加法算减法: 想9+( )=15, 9+ 6 =15, 所以 15-9= 6直接写得数:(9)+(7)=16 (8)+(7)=1516-9=( ) 15-8=( )16-7=( ) 15-7=( )(3)+(9)=12 (8)+(6)=1412-9=( ) 14-8=( )12-3=( ) 14-6=( )二、在里填上适当的数。

12- 9 13- =8 16- =912- =8 15- =9 17- =9三、把左右两边相等的式子用线连起来。

13-813-10 14-9 47+210-3 17-10 612-9 9-416-8 715-87+415-9 816-513-4 12-8 5四、算一算,比一比,在○里填上“<”、“>”或“=”。

11-8○4 13-8○6 15-8○914-9○5 12-9○4 5+9○13重点练习:一、圈一圈、算一算。

13-8=()14-9=()二、列计算式。

☆☆☆☆☆♂♂☆☆☆☆♂♂♂()〇()=()(朵)◎◎◎◎◎◎◎◎◎?个15个()〇()=()(个)三、我会用数学。

1、飞机场上先飞走了9架飞机,又飞走了7架飞机,一共飞走了几架飞机?()〇()=()(架)2、书店原有10个人,刚进来了7个人,又走出去9个人,现在有多少人?()〇()〇()=()(人)3、10元9元2元7角(1)买一个和一个,一共多少元?()○()=()(元)(2)一个比一个贵多少钱?()○()=()(元)(3)小红要买一个,带了1元钱,应找回多少钱?()○()=()(角)课堂小测:1. 在○里填上“>”、“<”或“=”3○11-9 4○15-9 6○13-8 7○15-8 19○12﹢7 13○15-5 2、认真计算5+8-8=9-7+8=5+6-9=15-8+718-9-5=11-1+8=17-8-8=12-8+7=15-4-9=3、做减法, 把得数填在方格内4. 填空9+( )=13 9+( )=11 9+( )=158+( )=17 切8+( )=14 8+( )=125.看图列式计算6、应用题1.小雨和小雪共画了15朵花,小雨画了9朵,小雪画了几朵?2.小明有18枝彩色笔,小刚借走了9枝,小明还有几枝?3.同学们排队,小兰的前边有9人,后面有7人,这一行共有多少人? 4.小青要练习写16个毛笔字,还剩下8个字没有写,他已经写了几个字? 5.停车场上的汽车开走了6辆,又开走了8辆,一共开走了多少辆?。

人教新版小学一年级数学下册《十几减9、8、7、6》经典练习课

人教新版小学一年级数学下册《十几减9、8、7、6》经典练习课

13-8=5 15-8=7 16-8=8 12-8=4 11-8=3 14-8=6 17-8=9 10-8=2
12-7=5 14-7=7 16-7=9 13-7=6 11-7=4 15-7=8
11-6=5 15-6=9 14-6=8 16-6=10 13-6=7
12-7= 5 18-9= 9 11-8= 3 16-7= 9
6
6
12
7 15
2
9 6
18
14 4
7
14
13
15
7
8
15
6
9
一个数加上7,它的得数比15 小比11大,请问这个数是几? 14 13 12 ( 7 )+ 7 = 14 ( 6 )+ 7 = 13 ( 5 )+ 7 = 12
答:这个数可以是5、6、7。
14-6= 8 8 + 9= 17
13-6= 7 7 + 5= 12 11-6= 5
15-7= 8 17-8= 9 15-9=7
8
7
6
< >
> <
6 5= <7源自=6=6=5
=5
=7 =8 =7
=8
=4 =7 =5
=7
=8 =6 =4
5 8 9
11-6=5 15-7=8 18-9=9
6
≡≡≡
12 ---
十几减7等于几加3
12-7=( 2 )+(3 )=( 5) 14-7=( 4 )+( 3 )=(7) 13-7= 6 15-7= 8 11-7= 4 16-7= 9
得数只要看十几 的个位是几,得 数就是比几多4
11 - 6 = 5 12 - 6 = 6 13 - 6 = 7 14 - 6 = 8 15 - 6 = 9 16 - 6 = 10

北师大版一年级数学下册1-4单元知识梳理+单元检测卷(含答案)

北师大版一年级数学下册1-4单元知识梳理+单元检测卷(含答案)

北师大版一年级数学下册1-4单元知识梳理+单元检测卷(含答案)第一单元知识梳理十几减9,8,7,6等的退位减法1. 计算十几减9,8,7,6等的退位减法,可以用“破十法”“平十法”“想加算减法”等方法计算2. 看图列式,已知总数和去掉的一部分,求还剩下多少,用减法计算解决多多少、少多少的问题小鸟有12只,小猴有5只,小鸟比小猴多几只? 12-5=7(只) 比较两种物体的个数,求一种比另一种多多少或少多少,用减法计算根据情境提出数学问题并解决问题 笼子里有7只白兔,6只灰兔,提出数学问题并解答。

笼子里一共有多少只兔子?7+6=13(只)1. 能准确地收集情境中的数学信息,提出恰当的数学问题2. 能依据加法和减法的含义,正确列式计算,解决相关的实际问题20以内退位减法表中的规律 10-4=6 11-5=612-6=6 13-7=614-8=6 15-9=6掌握20以内退位减法表中的规律第一单元检测卷 加与减(一)一、填空题 1.按规律填数。

( )4 6 8 ( ) ( ) ( )1247( )( )( )2.14比9多( ),5比12少( )。

3.猜灯谜,填一填。

+9=13 8+=15 2+=8+7=12-4=11 16-=6 16-=13 -7=74.15比7大( ),2比11小( )。

5.比8多8的数是( ),和它相邻的数是( )和( )。

二、选择题1.用9、13、4写出减法算式,不正确的是()。

A.13-4=9 B.13-9=4 C.9-4=52.下面算式()的得数与14-5相同。

A.15-8 B.4+5 C.11-33.11-7=()。

A.4 B.6 C.7 D.214.停车场原来有15辆汽车,现在只有6辆,开走了()辆。

A.9 B.10 C.145.草地上的白羊和黑羊一共有12只,白羊有7只,黑羊有()A.12+7=19(只) B.12-7=5(只)C.12+7=5(只)D.12-7=6(只)6.停车场原来停了14辆汽车,后来开走了7辆,停车场现在停了()辆。

一年级十几减9的退位减法计算题

一年级十几减9的退位减法计算题

一年级十几减9的退位减法计算题班级 姓名18 -9 =10 -9 =18 -9 =11 -9 = 17 -9 =13 -9 =13 -9 =13 -9 = 13 -9 =17 -9 =10 -9 =16 -9 = 17 -9 =17 -9 =15 -9 =15 -9 = 10 -9 =10 -9 =18 -9 =19 -9 = 17 -9 =14 -9 =19 -9 =10 -9 = 14 -9 =11 -9 =12 -9 =10 -9 = 12 -9 =12 -9 =13 -9 =18 -9 = 11 -9 =13 -9 =19 -9 =18 -9 = 11 -9 =12 -9 =17 -9 =14 -9 = 13 -9 =11 -9 =16 -9 =15 -9 = 18 -9 =16 -9 =11 -9 =16 -9 = 11 -9 =12 -9 =19 -9 =14 -9 = 10 -9 =18 -9 =14 -9 =12 -9 = 16 -9 =19 -9 =17 -9 =17 -9 = 15 -9 =14 -9 =10 -9 =15 -9 = 19 -9 =14 -9 =11 -9 =14 -9 = 18 -9 =19 -9 =11 -9 =19 -9 = 10 -9 =10 -9 =18 -9 =16 -9 = 17 -9 =11 -9 =10 -9 =16 -9 = 16 -9 =13 -9 =10 -9 =15 -9 = 16 -9 =12 -9 =13 -9 =18 -9 = 10 -9 =19 -9 =15 -9 =13 -9 = 12 -9 =13 -9 =19 -9 =18 -9 = 10 -9 =13 -9 =13 -9 =15 -9 =一年级十几减9的退位减法计算题班级 姓名14 -9 =11 -9 =14 -9 =14 -9 =15 -9 =16 -9 =19 -9 =15 -9 = 15 -9 =18 -9 =15 -9 =14 -9 = 17 -9 =16 -9 =19 -9 =12 -9 = 19 -9 =14 -9 =13 -9 =13 -9 = 13 -9 =18 -9 =17 -9 =15 -9 =16 -9 =12 -9 =15 -9 =19 -9 =17 -9 =15 -9 =12 -9 =16 -9 =18 -9 =12 -9 =14 -9 =16 -9 =11 -9 =18 -9 =14 -9 =12 -9 =12 -9 =15 -9 =16 -9 =13 -9 = 14 -9 =15 -9 =16 -9 =19 -9 = 14 -9 =10 -9 =10 -9 =16 -9 = 14 -9 =18 -9 =19 -9 =16 -9 = 16 -9 =15 -9 =10 -9 =12 -9 = 13 -9 =19 -9 =17 -9 =18 -9 = 16 -9 =10 -9 =15 -9 =19 -9 = 19 -9 =10 -9 =13 -9 =17 -9 = 11 -9 =16 -9 =13 -9 =14 -9 = 10 -9 =18 -9 =19 -9 =13 -9 = 14 -9 =18 -9 =17 -9 =16 -9 = 12 -9 =15 -9 =16 -9 =15 -9 = 16 -9 =18 -9 =14 -9 =12 -9 = 16 -9 =15 -9 =15 -9 =14 -9 =18 -9 =10 -9 =11 -9 =17 -9 =19 -9 =16 -9 =19 -9 =14 -9 =一年级十几减9的退位减法计算题班级 姓名12 -9 =19 -9 =11 -9 =17 -9 = 18 -9 =10 -9 =16 -9 =15 -9 = 17 -9 =16 -9 =15 -9 =12 -9 = 17 -9 =14 -9 =14 -9 =18 -9 = 14 -9 =16 -9 =13 -9 =16 -9 = 16 -9 =15 -9 =11 -9 =10 -9 = 12 -9 =12 -9 =18 -9 =13 -9 = 16 -9 =16 -9 =11 -9 =12 -9 =16 -9 =18 -9 =10 -9 =19 -9 =17 -9 =16 -9 =18 -9 =15 -9 = 17 -9 =12 -9 =14 -9 =10 -9 = 12 -9 =17 -9 =18 -9 =19 -9 = 11 -9 =18 -9 =14 -9 =18 -9 = 18 -9 =15 -9 =15 -9 =17 -9 = 18 -9 =14 -9 =11 -9 =18 -9 = 13 -9 =14 -9 =19 -9 =10 -9 = 19 -9 =16 -9 =14 -9 =16 -9 = 13 -9 =10 -9 =16 -9 =18 -9 = 13 -9 =19 -9 =10 -9 =13 -9 = 13 -9 =11 -9 =19 -9 =14 -9 =16 -9 =12 -9 =19 -9 =13 -9 =17 -9 =15 -9 =11 -9 =11 -9 = 13 -9 =11 -9 =12 -9 =15 -9 =11 -9 =15 -9 =10 -9 =15 -9 =12 -9 =14 -9 =11 -9 =17 -9 =13 -9 =16 -9 =16 -9 =19 -9 =一年级十几减9的退位减法计算题班级 姓名16 -9 =16 -9 =16 -9 =11 -9 = 16 -9 =10 -9 =19 -9 =13 -9 = 12 -9 =19 -9 =11 -9 =12 -9 = 16 -9 =16 -9 =18 -9 =14 -9 = 11 -9 =18 -9 =12 -9 =19 -9 = 15 -9 =17 -9 =12 -9 =17 -9 = 13 -9 =19 -9 =13 -9 =11 -9 = 15 -9 =13 -9 =17 -9 =12 -9 = 15 -9 =14 -9 =16 -9 =11 -9 = 11 -9 =11 -9 =10 -9 =18 -9 = 18 -9 =12 -9 =18 -9 =18 -9 = 18 -9 =18 -9 =13 -9 =18 -9 = 12 -9 =12 -9 =18 -9 =15 -9 = 11 -9 =16 -9 =12 -9 =10 -9 = 11 -9 =17 -9 =10 -9 =19 -9 = 15 -9 =14 -9 =15 -9 =18 -9 = 15 -9 =17 -9 =13 -9 =19 -9 = 18 -9 =19 -9 =19 -9 =15 -9 = 16 -9 =10 -9 =10 -9 =18 -9 = 10 -9 =14 -9 =15 -9 =19 -9 = 14 -9 =18 -9 =15 -9 =12 -9 = 14 -9 =12 -9 =10 -9 =14 -9 = 14 -9 =18 -9 =14 -9 =15 -9 = 16 -9 =18 -9 =17 -9 =12 -9 = 11 -9 =15 -9 =12 -9 =15 -9 = 19 -9 =14 -9 =19 -9 =19 -9 =一年级十几减9的退位减法计算题班级 姓名10 -9 =16 -9 =18 -9 =18 -9 = 18 -9 =10 -9 =16 -9 =10 -9 = 18 -9 =13 -9 =10 -9 =14 -9 = 11 -9 =10 -9 =14 -9 =14 -9 = 15 -9 =17 -9 =11 -9 =11 -9 = 11 -9 =17 -9 =13 -9 =14 -9 = 17 -9 =19 -9 =13 -9 =18 -9 = 19 -9 =14 -9 =11 -9 =14 -9 = 11 -9 =14 -9 =10 -9 =12 -9 = 10 -9 =18 -9 =18 -9 =10 -9 = 19 -9 =13 -9 =13 -9 =16 -9 = 19 -9 =17 -9 =10 -9 =19 -9 = 14 -9 =19 -9 =16 -9 =16 -9 = 10 -9 =14 -9 =19 -9 =12 -9 = 16 -9 =13 -9 =15 -9 =18 -9 = 11 -9 =14 -9 =16 -9 =19 -9 = 18 -9 =19 -9 =19 -9 =16 -9 = 15 -9 =11 -9 =10 -9 =12 -9 = 18 -9 =19 -9 =14 -9 =14 -9 = 17 -9 =15 -9 =11 -9 =11 -9 = 10 -9 =18 -9 =18 -9 =11 -9 = 13 -9 =16 -9 =14 -9 =16 -9 = 12 -9 =10 -9 =14 -9 =13 -9 = 16 -9 =19 -9 =19 -9 =17 -9 = 15 -9 =17 -9 =14 -9 =15 -9 = 18 -9 =17 -9 =12 -9 =12 -9 =一年级十几减9的退位减法计算题班级 姓名19 -9 =19 -9 =13 -9 =17 -9 = 18 -9 =18 -9 =16 -9 =15 -9 = 18 -9 =10 -9 =16 -9 =19 -9 = 18 -9 =19 -9 =11 -9 =11 -9 =11 -9 =11 -9 =16 -9 =12 -9 =12 -9 =18 -9 =19 -9 =19 -9 = 19 -9 =14 -9 =19 -9 =12 -9 = 18 -9 =10 -9 =17 -9 =16 -9 = 12 -9 =15 -9 =11 -9 =16 -9 = 10 -9 =16 -9 =11 -9 =12 -9 = 14 -9 =13 -9 =11 -9 =11 -9 = 16 -9 =11 -9 =19 -9 =12 -9 = 12 -9 =12 -9 =13 -9 =19 -9 = 14 -9 =11 -9 =16 -9 =11 -9 = 19 -9 =12 -9 =15 -9 =10 -9 = 10 -9 =12 -9 =12 -9 =19 -9 = 15 -9 =12 -9 =18 -9 =14 -9 = 15 -9 =10 -9 =17 -9 =15 -9 = 12 -9 =19 -9 =17 -9 =12 -9 = 11 -9 =13 -9 =10 -9 =10 -9 = 13 -9 =16 -9 =15 -9 =11 -9 = 19 -9 =12 -9 =12 -9 =18 -9 =16 -9 =13 -9 =15 -9 =16 -9 =17 -9 =10 -9 =16 -9 =18 -9 = 13 -9 =10 -9 =19 -9 =14 -9 = 12 -9 =16 -9 =18 -9 =15 -9 =一年级十几减9的退位减法计算题班级 姓名12 -9 =14 -9 =19 -9 =12 -9 = 17 -9 =16 -9 =13 -9 =10 -9 = 11 -9 =11 -9 =15 -9 =13 -9 = 18 -9 =10 -9 =11 -9 =18 -9 = 17 -9 =13 -9 =13 -9 =12 -9 = 10 -9 =14 -9 =12 -9 =11 -9 = 18 -9 =12 -9 =13 -9 =12 -9 = 14 -9 =11 -9 =15 -9 =17 -9 = 14 -9 =11 -9 =18 -9 =18 -9 =17 -9 =17 -9 =13 -9 =10 -9 =18 -9 =11 -9 =10 -9 =18 -9 = 18 -9 =12 -9 =12 -9 =14 -9 = 18 -9 =14 -9 =12 -9 =17 -9 =13 -9 =11 -9 =15 -9 =11 -9 =14 -9 =13 -9 =19 -9 =14 -9 = 11 -9 =11 -9 =19 -9 =17 -9 = 15 -9 =19 -9 =10 -9 =12 -9 = 18 -9 =16 -9 =15 -9 =18 -9 =14 -9 =15 -9 =12 -9 =13 -9 =15 -9 =14 -9 =18 -9 =11 -9 = 19 -9 =14 -9 =10 -9 =17 -9 = 19 -9 =19 -9 =12 -9 =18 -9 = 19 -9 =12 -9 =19 -9 =19 -9 =14 -9 =15 -9 =13 -9 =11 -9 =15 -9 =12 -9 =10 -9 =14 -9 = 14 -9 =13 -9 =11 -9 =17 -9 =一年级十几减9的退位减法计算题班级 姓名14 -9 =19 -9 =10 -9 =11 -9 = 19 -9 =19 -9 =14 -9 =15 -9 = 19 -9 =10 -9 =13 -9 =16 -9 = 14 -9 =14 -9 =18 -9 =19 -9 = 16 -9 =13 -9 =12 -9 =18 -9 = 19 -9 =17 -9 =11 -9 =10 -9 = 10 -9 =11 -9 =19 -9 =16 -9 = 10 -9 =17 -9 =12 -9 =11 -9 = 12 -9 =19 -9 =11 -9 =15 -9 = 18 -9 =12 -9 =15 -9 =10 -9 = 15 -9 =10 -9 =14 -9 =18 -9 = 19 -9 =12 -9 =16 -9 =19 -9 = 17 -9 =18 -9 =12 -9 =12 -9 =12 -9 =14 -9 =15 -9 =15 -9 =13 -9 =15 -9 =19 -9 =16 -9 = 16 -9 =16 -9 =11 -9 =12 -9 = 13 -9 =11 -9 =19 -9 =19 -9 = 18 -9 =11 -9 =17 -9 =13 -9 = 15 -9 =11 -9 =18 -9 =10 -9 = 12 -9 =15 -9 =16 -9 =19 -9 = 10 -9 =15 -9 =12 -9 =11 -9 = 18 -9 =14 -9 =16 -9 =13 -9 =15 -9 =14 -9 =14 -9 =14 -9 =16 -9 =13 -9 =18 -9 =14 -9 =17 -9 =18 -9 =10 -9 =14 -9 = 19 -9 =11 -9 =19 -9 =13 -9 =一年级十几减9的退位减法计算题班级 姓名12 -9 =14 -9 =13 -9 =13 -9 =12 -9 =15 -9 =14 -9 =19 -9 =13 -9 =14 -9 =15 -9 =14 -9 =14 -9 =10 -9 =10 -9 =15 -9 = 12 -9 =16 -9 =17 -9 =17 -9 = 12 -9 =15 -9 =19 -9 =17 -9 = 16 -9 =12 -9 =13 -9 =10 -9 = 18 -9 =11 -9 =10 -9 =18 -9 = 13 -9 =13 -9 =10 -9 =10 -9 = 12 -9 =12 -9 =14 -9 =14 -9 = 16 -9 =18 -9 =15 -9 =19 -9 = 14 -9 =14 -9 =13 -9 =16 -9 = 10 -9 =12 -9 =14 -9 =11 -9 = 14 -9 =18 -9 =19 -9 =15 -9 = 17 -9 =10 -9 =12 -9 =17 -9 = 15 -9 =18 -9 =15 -9 =17 -9 = 19 -9 =14 -9 =19 -9 =18 -9 = 15 -9 =17 -9 =14 -9 =13 -9 =12 -9 =12 -9 =15 -9 =16 -9 =13 -9 =10 -9 =12 -9 =17 -9 =10 -9 =14 -9 =19 -9 =17 -9 =11 -9 =12 -9 =10 -9 =16 -9 =12 -9 =18 -9 =11 -9 =19 -9 = 17 -9 =11 -9 =15 -9 =13 -9 = 19 -9 =13 -9 =11 -9 =19 -9 = 18 -9 =13 -9 =15 -9 =15 -9 =一年级十几减9的退位减法计算题班级 姓名17 -9 =12 -9 =16 -9 =13 -9 = 12 -9 =13 -9 =11 -9 =16 -9 = 12 -9 =12 -9 =16 -9 =12 -9 = 10 -9 =11 -9 =15 -9 =10 -9 = 17 -9 =17 -9 =10 -9 =12 -9 = 19 -9 =17 -9 =10 -9 =15 -9 = 19 -9 =10 -9 =13 -9 =16 -9 = 12 -9 =13 -9 =14 -9 =18 -9 = 11 -9 =17 -9 =19 -9 =17 -9 = 10 -9 =13 -9 =12 -9 =16 -9 = 13 -9 =11 -9 =15 -9 =18 -9 = 15 -9 =15 -9 =17 -9 =11 -9 = 19 -9 =13 -9 =19 -9 =14 -9 =11 -9 =17 -9 =10 -9 =17 -9 =12 -9 =19 -9 =15 -9 =19 -9 =13 -9 =14 -9 =12 -9 =17 -9 = 13 -9 =19 -9 =10 -9 =19 -9 = 13 -9 =17 -9 =17 -9 =17 -9 = 12 -9 =12 -9 =16 -9 =10 -9 = 19 -9 =13 -9 =18 -9 =18 -9 = 15 -9 =14 -9 =17 -9 =11 -9 = 19 -9 =10 -9 =10 -9 =16 -9 = 14 -9 =11 -9 =11 -9 =18 -9 = 12 -9 =12 -9 =11 -9 =18 -9 = 19 -9 =11 -9 =11 -9 =15 -9 = 10 -9 =12 -9 =15 -9 =17 -9 =一年级十几减9的退位减法计算题班级 姓名15 -9 =17 -9 =16 -9 =13 -9 = 17 -9 =18 -9 =10 -9 =12 -9 = 13 -9 =15 -9 =11 -9 =10 -9 = 16 -9 =11 -9 =11 -9 =17 -9 = 16 -9 =17 -9 =15 -9 =11 -9 = 10 -9 =10 -9 =16 -9 =16 -9 = 12 -9 =13 -9 =19 -9 =10 -9 = 19 -9 =13 -9 =10 -9 =17 -9 = 13 -9 =12 -9 =15 -9 =18 -9 = 10 -9 =12 -9 =14 -9 =17 -9 = 17 -9 =16 -9 =13 -9 =18 -9 = 19 -9 =14 -9 =16 -9 =19 -9 = 10 -9 =19 -9 =14 -9 =15 -9 = 16 -9 =12 -9 =15 -9 =18 -9 = 15 -9 =16 -9 =17 -9 =16 -9 = 19 -9 =10 -9 =15 -9 =18 -9 = 15 -9 =14 -9 =12 -9 =16 -9 = 12 -9 =10 -9 =13 -9 =19 -9 = 16 -9 =18 -9 =19 -9 =17 -9 = 16 -9 =13 -9 =18 -9 =19 -9 = 14 -9 =14 -9 =13 -9 =18 -9 = 13 -9 =13 -9 =12 -9 =14 -9 = 10 -9 =14 -9 =16 -9 =15 -9 = 16 -9 =17 -9 =15 -9 =12 -9 = 14 -9 =14 -9 =12 -9 =14 -9 = 12 -9 =16 -9 =16 -9 =15 -9 =一年级十几减9的退位减法计算题班级 姓名14 -9 =18 -9 =10 -9 =15 -9 = 14 -9 =19 -9 =11 -9 =16 -9 =11 -9 =10 -9 =13 -9 =17 -9 =12 -9 =14 -9 =16 -9 =19 -9 = 12 -9 =11 -9 =13 -9 =19 -9 = 14 -9 =10 -9 =12 -9 =17 -9 = 18 -9 =16 -9 =18 -9 =16 -9 = 10 -9 =16 -9 =11 -9 =10 -9 = 15 -9 =18 -9 =11 -9 =11 -9 =11 -9 =16 -9 =16 -9 =19 -9 =12 -9 =10 -9 =15 -9 =14 -9 =13 -9 =10 -9 =11 -9 =19 -9 = 10 -9 =12 -9 =14 -9 =18 -9 = 16 -9 =10 -9 =15 -9 =13 -9 = 11 -9 =19 -9 =11 -9 =12 -9 = 15 -9 =12 -9 =16 -9 =16 -9 =11 -9 =17 -9 =15 -9 =13 -9 =12 -9 =15 -9 =10 -9 =17 -9 = 11 -9 =11 -9 =19 -9 =17 -9 = 16 -9 =15 -9 =17 -9 =14 -9 = 16 -9 =17 -9 =15 -9 =14 -9 = 14 -9 =19 -9 =12 -9 =16 -9 = 18 -9 =15 -9 =19 -9 =18 -9 = 11 -9 =17 -9 =18 -9 =18 -9 = 10 -9 =17 -9 =13 -9 =19 -9 = 10 -9 =18 -9 =11 -9 =13 -9 =一年级十几减9的退位减法计算题班级 姓名17 -9 =13 -9 =12 -9 =18 -9 =14 -9 =19 -9 =14 -9 =18 -9 =15 -9 =17 -9 =11 -9 =16 -9 =16 -9 =17 -9 =12 -9 =10 -9 = 19 -9 =13 -9 =18 -9 =18 -9 = 13 -9 =15 -9 =10 -9 =11 -9 = 18 -9 =11 -9 =17 -9 =15 -9 = 16 -9 =12 -9 =13 -9 =17 -9 = 12 -9 =19 -9 =13 -9 =14 -9 =18 -9 =16 -9 =11 -9 =10 -9 =19 -9 =19 -9 =10 -9 =15 -9 = 15 -9 =17 -9 =14 -9 =14 -9 = 15 -9 =18 -9 =15 -9 =14 -9 = 10 -9 =15 -9 =18 -9 =14 -9 = 17 -9 =17 -9 =17 -9 =17 -9 = 11 -9 =10 -9 =12 -9 =12 -9 = 15 -9 =16 -9 =13 -9 =19 -9 = 13 -9 =14 -9 =18 -9 =17 -9 = 19 -9 =14 -9 =17 -9 =18 -9 = 12 -9 =14 -9 =16 -9 =11 -9 = 14 -9 =11 -9 =13 -9 =12 -9 = 10 -9 =17 -9 =18 -9 =11 -9 = 12 -9 =13 -9 =14 -9 =17 -9 = 19 -9 =17 -9 =15 -9 =11 -9 = 13 -9 =10 -9 =11 -9 =11 -9 = 12 -9 =19 -9 =15 -9 =15 -9 =一年级十几减9的退位减法计算题班级 姓名10 -9 =12 -9 =11 -9 =10 -9 = 13 -9 =19 -9 =14 -9 =11 -9 = 12 -9 =18 -9 =13 -9 =14 -9 = 17 -9 =10 -9 =12 -9 =11 -9 = 17 -9 =15 -9 =12 -9 =10 -9 =12 -9 =18 -9 =14 -9 =14 -9 =13 -9 =10 -9 =19 -9 =18 -9 = 16 -9 =13 -9 =19 -9 =12 -9 = 18 -9 =18 -9 =11 -9 =17 -9 = 10 -9 =17 -9 =13 -9 =13 -9 = 12 -9 =14 -9 =15 -9 =17 -9 = 17 -9 =14 -9 =11 -9 =11 -9 = 19 -9 =11 -9 =18 -9 =12 -9 = 15 -9 =18 -9 =19 -9 =12 -9 = 19 -9 =13 -9 =13 -9 =13 -9 = 14 -9 =16 -9 =11 -9 =10 -9 = 13 -9 =18 -9 =11 -9 =17 -9 = 15 -9 =17 -9 =13 -9 =12 -9 = 15 -9 =17 -9 =13 -9 =14 -9 = 11 -9 =16 -9 =16 -9 =19 -9 = 11 -9 =11 -9 =14 -9 =19 -9 =10 -9 =18 -9 =13 -9 =19 -9 =11 -9 =10 -9 =13 -9 =13 -9 = 18 -9 =12 -9 =15 -9 =18 -9 = 14 -9 =14 -9 =13 -9 =13 -9 = 19 -9 =12 -9 =14 -9 =14 -9 =一年级十几减9的退位减法计算题班级 姓名16 -9 =12 -9 =15 -9 =10 -9 = 18 -9 =17 -9 =11 -9 =13 -9 = 12 -9 =14 -9 =14 -9 =14 -9 = 14 -9 =17 -9 =15 -9 =16 -9 = 16 -9 =16 -9 =13 -9 =11 -9 = 11 -9 =16 -9 =19 -9 =15 -9 = 19 -9 =19 -9 =17 -9 =15 -9 = 19 -9 =19 -9 =13 -9 =13 -9 = 10 -9 =19 -9 =16 -9 =16 -9 = 19 -9 =13 -9 =12 -9 =19 -9 = 13 -9 =12 -9 =19 -9 =17 -9 = 11 -9 =15 -9 =18 -9 =18 -9 = 15 -9 =12 -9 =10 -9 =15 -9 = 19 -9 =10 -9 =18 -9 =16 -9 = 18 -9 =15 -9 =15 -9 =18 -9 = 12 -9 =14 -9 =12 -9 =10 -9 = 16 -9 =19 -9 =11 -9 =18 -9 = 16 -9 =18 -9 =13 -9 =15 -9 = 15 -9 =10 -9 =12 -9 =17 -9 = 11 -9 =14 -9 =10 -9 =11 -9 = 17 -9 =12 -9 =12 -9 =17 -9 = 16 -9 =11 -9 =16 -9 =11 -9 =12 -9 =10 -9 =17 -9 =12 -9 =13 -9 =12 -9 =11 -9 =12 -9 = 17 -9 =16 -9 =10 -9 =18 -9 = 16 -9 =19 -9 =12 -9 =12 -9 =一年级十几减9的退位减法计算题班级 姓名13 -9 =17 -9 =10 -9 =13 -9 = 19 -9 =18 -9 =18 -9 =19 -9 = 18 -9 =10 -9 =18 -9 =11 -9 = 16 -9 =12 -9 =12 -9 =13 -9 = 19 -9 =12 -9 =11 -9 =10 -9 =18 -9 =11 -9 =19 -9 =15 -9 =19 -9 =16 -9 =11 -9 =13 -9 = 16 -9 =15 -9 =15 -9 =18 -9 = 16 -9 =14 -9 =18 -9 =18 -9 =15 -9 =19 -9 =11 -9 =12 -9 =16 -9 =16 -9 =19 -9 =11 -9 = 18 -9 =17 -9 =12 -9 =16 -9 = 13 -9 =12 -9 =14 -9 =18 -9 = 13 -9 =15 -9 =13 -9 =13 -9 = 17 -9 =12 -9 =14 -9 =14 -9 = 10 -9 =19 -9 =12 -9 =18 -9 = 17 -9 =12 -9 =11 -9 =18 -9 = 17 -9 =12 -9 =15 -9 =11 -9 = 12 -9 =12 -9 =11 -9 =14 -9 = 19 -9 =17 -9 =18 -9 =18 -9 = 13 -9 =17 -9 =18 -9 =17 -9 = 11 -9 =12 -9 =10 -9 =16 -9 = 19 -9 =10 -9 =13 -9 =10 -9 = 18 -9 =12 -9 =12 -9 =18 -9 = 10 -9 =19 -9 =16 -9 =11 -9 = 16 -9 =18 -9 =14 -9 =19 -9 =一年级十几减9的退位减法计算题班级 姓名15 -9 =11 -9 =17 -9 =14 -9 =16 -9 =14 -9 =18 -9 =16 -9 = 19 -9 =17 -9 =18 -9 =14 -9 = 16 -9 =10 -9 =14 -9 =15 -9 = 12 -9 =19 -9 =15 -9 =13 -9 = 11 -9 =11 -9 =18 -9 =13 -9 = 17 -9 =17 -9 =19 -9 =11 -9 = 19 -9 =13 -9 =16 -9 =13 -9 = 13 -9 =15 -9 =17 -9 =15 -9 = 15 -9 =18 -9 =17 -9 =11 -9 = 10 -9 =10 -9 =19 -9 =11 -9 = 12 -9 =14 -9 =18 -9 =17 -9 = 10 -9 =18 -9 =13 -9 =19 -9 = 18 -9 =17 -9 =10 -9 =18 -9 = 18 -9 =18 -9 =13 -9 =11 -9 = 18 -9 =19 -9 =13 -9 =19 -9 = 17 -9 =12 -9 =17 -9 =17 -9 =17 -9 =19 -9 =18 -9 =14 -9 =18 -9 =18 -9 =12 -9 =19 -9 = 18 -9 =13 -9 =19 -9 =19 -9 = 13 -9 =13 -9 =14 -9 =18 -9 = 11 -9 =11 -9 =16 -9 =11 -9 = 19 -9 =16 -9 =17 -9 =15 -9 = 13 -9 =15 -9 =11 -9 =14 -9 = 18 -9 =16 -9 =15 -9 =14 -9 = 12 -9 =11 -9 =10 -9 =15 -9 =一年级十几减9的退位减法计算题班级 姓名19 -9 =12 -9 =18 -9 =11 -9 = 13 -9 =11 -9 =16 -9 =11 -9 = 15 -9 =15 -9 =15 -9 =12 -9 = 12 -9 =13 -9 =16 -9 =16 -9 = 10 -9 =17 -9 =11 -9 =14 -9 = 10 -9 =10 -9 =12 -9 =17 -9 = 15 -9 =12 -9 =15 -9 =14 -9 = 13 -9 =12 -9 =14 -9 =10 -9 = 16 -9 =11 -9 =12 -9 =10 -9 = 12 -9 =15 -9 =18 -9 =15 -9 =17 -9 =16 -9 =16 -9 =13 -9 =18 -9 =15 -9 =19 -9 =12 -9 = 14 -9 =18 -9 =10 -9 =13 -9 = 16 -9 =11 -9 =16 -9 =14 -9 = 16 -9 =15 -9 =18 -9 =12 -9 = 10 -9 =14 -9 =10 -9 =11 -9 = 13 -9 =16 -9 =11 -9 =10 -9 = 16 -9 =16 -9 =16 -9 =18 -9 = 11 -9 =16 -9 =18 -9 =16 -9 = 13 -9 =15 -9 =14 -9 =16 -9 = 16 -9 =18 -9 =11 -9 =14 -9 = 19 -9 =12 -9 =11 -9 =13 -9 = 15 -9 =10 -9 =14 -9 =13 -9 = 14 -9 =11 -9 =11 -9 =14 -9 = 17 -9 =14 -9 =12 -9 =10 -9 = 13 -9 =11 -9 =17 -9 =18 -9 =一年级十几减9的退位减法计算题班级 姓名12 -9 =17 -9 =18 -9 =19 -9 = 16 -9 =15 -9 =11 -9 =10 -9 = 19 -9 =10 -9 =15 -9 =12 -9 = 15 -9 =12 -9 =12 -9 =12 -9 = 19 -9 =12 -9 =15 -9 =14 -9 = 14 -9 =17 -9 =12 -9 =12 -9 = 14 -9 =15 -9 =11 -9 =16 -9 = 14 -9 =16 -9 =12 -9 =17 -9 = 19 -9 =12 -9 =18 -9 =15 -9 = 18 -9 =13 -9 =19 -9 =18 -9 = 13 -9 =15 -9 =16 -9 =13 -9 = 19 -9 =12 -9 =19 -9 =18 -9 = 15 -9 =15 -9 =16 -9 =16 -9 =13 -9 =19 -9 =11 -9 =13 -9 =14 -9 =10 -9 =17 -9 =15 -9 = 16 -9 =19 -9 =11 -9 =10 -9 = 18 -9 =17 -9 =14 -9 =10 -9 = 16 -9 =16 -9 =16 -9 =14 -9 = 15 -9 =12 -9 =14 -9 =17 -9 = 11 -9 =10 -9 =18 -9 =16 -9 =10 -9 =19 -9 =15 -9 =19 -9 =11 -9 =16 -9 =17 -9 =13 -9 = 19 -9 =19 -9 =18 -9 =17 -9 = 13 -9 =10 -9 =11 -9 =13 -9 = 19 -9 =13 -9 =13 -9 =14 -9 = 13 -9 =19 -9 =16 -9 =13 -9 =一年级十几减9的退位减法计算题班级 姓名19 -9 =18 -9 =10 -9 =15 -9 = 10 -9 =10 -9 =10 -9 =19 -9 = 14 -9 =15 -9 =17 -9 =14 -9 = 13 -9 =10 -9 =11 -9 =16 -9 = 13 -9 =18 -9 =16 -9 =11 -9 = 17 -9 =19 -9 =12 -9 =11 -9 = 19 -9 =15 -9 =14 -9 =13 -9 = 10 -9 =11 -9 =11 -9 =12 -9 = 19 -9 =13 -9 =18 -9 =16 -9 = 17 -9 =14 -9 =13 -9 =12 -9 = 11 -9 =13 -9 =18 -9 =11 -9 = 18 -9 =14 -9 =19 -9 =17 -9 =11 -9 =16 -9 =16 -9 =19 -9 =12 -9 =18 -9 =17 -9 =15 -9 = 15 -9 =13 -9 =15 -9 =17 -9 = 10 -9 =15 -9 =19 -9 =17 -9 = 10 -9 =18 -9 =15 -9 =17 -9 = 15 -9 =18 -9 =18 -9 =14 -9 = 13 -9 =16 -9 =16 -9 =19 -9 = 13 -9 =15 -9 =10 -9 =19 -9 = 18 -9 =15 -9 =18 -9 =10 -9 = 14 -9 =19 -9 =12 -9 =10 -9 = 10 -9 =14 -9 =12 -9 =12 -9 = 14 -9 =18 -9 =17 -9 =14 -9 = 19 -9 =19 -9 =13 -9 =18 -9 = 16 -9 =12 -9 =15 -9 =10 -9 =。

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年级: 一年级 第一讲:十几减8、9 学员姓名:
学习目标:
1、能够比较熟练地口算十几减8、9的退位减法。

2、初步会用加法和减法解决简单元问题。

基础练习:
一、计算。

例题:15-9=
习题:
12-9= 17-9=
11-9= 14-9=
1、 15-8= 13-8=
17-8= 11-8=
2、认真计算
5+7-9= 16-8-6= 16-9+3= 11-9+6= 10-5+8= 13-8-4=
5 1
1.分解法:
想15分成10和5, 用10-9= 1, 1 + 5 = 6
2.想加法算减法: 想9+( )=15, 9+ 6 =15, 所以 15-9= 6
直接写得数:
(9)+(7)=16 (8)+(7)=15
16-9=( ) 15-8=( )
16-7=( ) 15-7=( )
(3)+(9)=12 (8)+(6)=14
12-9=( ) 14-8=( )
12-3=( ) 14-6=( )
二、在里填上适当的数。

12- 9 13- =8 16- =9
12- =8 15- =9 17- =9
三、把左右两边相等的式子用线连起来。

13-813-10 14-9 4
7+210-3 17-10 6
12-9 9-416-8 7
15-87+415-9 8
16-513-4 12-8 5
四、算一算,比一比,在○里填上“<”、“>”或“=”。

11-8○4 13-8○6 15-8○9
14-9○5 12-9○4 5+9○13
重点练习:
一、圈一圈、算一算。

13-8=()14-9=()二、列计算式。

☆☆☆☆☆♂♂
☆☆☆☆♂♂♂
()〇()=()(朵)
◎◎◎◎◎
◎◎◎◎?个
15个
()〇()=()(个)
三、我会用数学。

1、飞机场上先飞走了9架飞机,又飞走了7架飞机,一共飞走了几架飞机?
()〇()=()(架)
2、书店原有10个人,刚进来了7个人,又走出去9个人,现在有多少人?
()〇()〇()=()(人)
3、
10元9元2元7角
(1)买一个和一个,一共多少元?
()○()=()(元)
(2)一个比一个贵多少钱?
()○()=()(元)
(3)小红要买一个,带了1元钱,应找回多少钱?
()○()=()(角)
课堂小测:
1. 在○里填上“>”、“<”或“=”
3○11-9 4○15-9 6○13-8 7○15-8 19○12﹢7 13○15-5 2、认真计算
5+8-8=9-7+8=5+6-9=
15-8+718-9-5=11-1+8=
17-8-8=12-8+7=15-4-9=
3、做减法, 把得数填在方格内
4. 填空
9+( )=13 9+( )=11 9+( )=15
8+( )=17 切8+( )=14 8+( )=12
5.看图列式计算
6、应用题
1.小雨和小雪共画了15朵花,小雨画了9朵,小雪画了几朵?
2.小明有18枝彩色笔,小刚借走了9枝,小明还有几枝?
3.同学们排队,小兰的前边有9人,后面有7人,这一行共有多少人? 4.小青要练习写16个毛笔字,还剩下8个字没有写,他已经写了几个字? 5.停车场上的汽车开走了6辆,又开走了8辆,一共开走了多少辆?。

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