100以内整十数加法

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100以内整十加减法练习题

100以内整十加减法练习题姓名：_____________时间：__________做对了_____题24+45=6+42=2+33=42+47= 0+50=46+12= 14+73=53+45=3+90= 0+50=88-15=1-62=4-63= 4-72=99-38=93-82=64-23=2-31=2-61=89-40=9+70= 0+27=0+34= 5+33=28+41= 0+28= 7+72=+35= 3+50= 0+32= 0-60=-40=8-54=98-74=76-40=7-15=6-14=7-55=3-32=1-20=45+40=+50= 0+40=1+40=60+40=8+20=25+71=+13=1+40=6+40=59-32=99-43=0-50=-70=48-31=99-17= 9-53=93-62=-35=1-40=80+20=9+10=40+45= 18+20= 0+60= 0+11= 0+25=+13= 0+80=7+52=89-74=9-58=4-30=17-9=0-30=76-15=64-41=63-21=79-24=96-40=29+60=0+42=0+36=0+19=+20=2+47= 4+31= 4+13=70+22= 1+30=8-25=2-30=2-50= 18-12=96-14=6-33=8-53=8-36=4-31=2-20=100以内两位数加整十数的加法口算练习题姓名：_____________时间：__________做对了_____题1+70=80+0= 14+40=35+40=39+60=0+27= 9+10=6+40=9+50=50+42=0+34=0+45=+30= 0+40=60+36=0+3=28+40= 0+28=27+70=34+30=43+50=50+32=90-60=4-40=8-50=92-90=76-40=67-10=6-10=67-50=43-30=41-20=18+20=0+60=0+11=70+25=6+30=0+80= +50=-70=9-50=4-30= 17-0= 0-30=72-10= 1-40=3-20=9-20=6-40=2+40= 0+50=+10= 17+70= 3+40= +70= 0+50= 8-10= 1-60=-61= 4-70= 9-30=3-80=64-20=-30= 2-60=9-40= 1+40=0+40= +20= 10+71=4+10= 1+40=+40=59-30= 9-45=80-50=2-70= 0-30= 1-10=60-50= 3-60= 1-30= 1-40= 0+19=6+20= 0+47= 0+31=9+10=0+22= 1+30=-20=-30=62-50=18-9=-10=-30=52-50=-30=64-30=-20=100以内两位数加一位数的加法口算练习题姓名：_____________时间：__________做对了_____题13+9=+12= 0+41=5+82= +51=7+0=7+22=+44= 0+62=5+0=1+2=97+0= +37=+14=6+1=5+7= +9= +81=79+2=+20= 0+96= 1+85=35-1= 0-2=53-0= 7-5=91-2= 2-0= 1-60=2-90=78-8= 7-9= 0+8=+93=5+4= +2= +26=3+4= 1+60=4-1=55-4=9-8=-6=-4= 7-2=6-0= 8-8=4-2=2-9=38+5=5+3=5+46=2+88=+0=56+2= 0+53= 3-3=6-1= 19-0=20-3=84-3=28-3=0-1=7-8= 7-0=-8= +35= 3+1=7+54= 3+6=6+56= +95=+5=7-5= 4-8=6-3=17-1=75-9=36-5=85-5=38-5=77-1=7-3=+72= +79=9+9= 1+15= +42=8+2= +35=-9=77-8= 9-8=3-5=1-3= 1-7=7-0=4-4=0-0= 17-6=100以内两位数加一位数的加法口算练习题姓名：_____________时间：__________做对了_____题13+9=+12= 0+41=+82=+51= 7+0=7+22=3+44= 0+62=5+0= 1+2=97+0=2+37= +14=+1=5+7=0+9=22+81=79+2=+20= 0+96= 1+85=5-1=0-2=3-0=7-5=1-2=2-0=1-0=2-1=-8=7-9=70+8= +93=75+4=64+2= +26=93+4= 1+60=34-1=25-4=79-8=2-6=-4=57-2=6-0=-6=74-2=42-9=8+5= 5+3=+46= +88=95-0=6+2=0+53= 3-3=26-1=19-0=0-3= 4-3=28-3=0-1=7-8=7-0=5-8= +35=3+1=+54=3+6=6+56= +95= 0+5=-5=4-8=96-3= 17-1=75-9=6-5=-5=38-5= 7-1= 7-3= +72= +79=+9= 10+15=+42=8+2=8+35=4-9=77-8= 9-9=53-5= 1-3= 1-7= 7-0= 4-4= 0-0= 17-6=100以内整十数加整十数的加法口算练习题姓名：_____________时间：__________做对了_____题0+70= 0+40=10+90=0+40=30+60=0+20=60+10=40+30=40+50=0+40=010+20=20+80=70+20=20+70=30+70=40+50=50+30=30-10=80-20=80-20=50-30=90-10=50-10=60-10=60-50=30-30=40-10= 10+20= 0+40= 0+80=0+20=70+30= 10+80= 0+50=0-10= 0-30= 0-70=60-50=0-30=90-70= 0-30= 0-20= 0-20= 0-40=40+40=40+40=90+0=30+70=50+40= 0+70=0+50= 0-20= 0-10= 0-10= 0-10=0-30=80-80=60-20=30-30=80-50= 0-40=40+40= 0+30= 10+20= 10+70= 0+10=20+80=20+40= 0-40=0-40=90-30= 10-10=0-20=0-10= 0-30=0-30=60-20=0-30=0+10= 0+60= 0+40= 0+30=0+10=0+20=40+30=0-70=0-70=90-60=0-50=0-10=30-20=50-40= 0-0= 0-30= 0-20=100以内两位数加整十数的加法口算练习题姓名：_____________时间：__________做对了_____题1) 1+70=2)0+0=)14+40=4)5+40= )9+60=)0+27= )9+10=8)6+40=9)+50= 10)0+42= 11)0+34=12)0+45=13)2+30= 14)0+40= 15)0+36= 16)0+3= 17) 18+20=18)2+40= 19)1+40=0)0+19=1)8+40=22)0+60=23)0+50=4)0+40=5)6+20=6)0+28=27)0+11=28)6+10=9)+20=0)0+47=1)7+70=32)0+25=33) 17+70=4) 10+71=5)0+31=6)4+30=37)6+30=38)3+40=9)+10=4)1+40=5)0+22=6)0+32=47)+50=8) 0+50=)6+40=0)1+30= 100以内两位数减整十数的减法口算练习题姓名：_____________时间：__________做对了_____题1)0-60= )9-70=)8-10=)9-30= )8-20=)4-40= )9-50=)1-60 =)9-40= 10)2-30= 11)8-50= 12)4-30=13)4-60=14)0-50=15)2-50= 16)2-90= 17) 17-0= 18)4-70=19)2-70=20)18-0=1)6-40=2)0-30=23)9-30=24)0-30=25)6-10=6)7-10=7)2-10=28)3-80=29)1-10=30)6-30=1)6-10=2)1-40=33)4-20=34)0-50=35)2-50=6)7-50=7)3-20=38)2-30=39)3-60=40)8-30=1)3-30=2)9-20=43)2-60=44)1-30=45)4-30=6)1-20=7)6-40=48)9-40=49)1-40=50)2-20= 100以内两位数加一位数的加法口算练习题姓名：_____________时间：__________做对了_____题1) 13+9=2)+12=3) 0+41=4)+82=)+51=)7+0=7)+22=8)+44=9) 0+62=10)5+0= 11)1+2= 12)7+0= 13)+37= 14)+14= 15)6+1= 16)5+7= 17)0+8= 18)8+5= 19)+35= 0)+72=1)+9=22)+93= 3)+3=24)3+1= 5)+79=6)+81= 7)5+4= 8)+46=)+54= 0)9+9=1)9+2=)+2=33)+88=)3+6=) 1+15=6)+20= 7)+26=)+0=)+56=40)+42=1) 0+96=)3+4= 3)6+2= 4)+95= 5)8+2=6) 1+85= 7) 1+60=) 0+53=)+5=50)+35= 100以内两位数减一位数的减法口算练习题姓名：_____________时间：__________做对了_____题1)5-1= )4-1= )3-3=)7-5=)4-9=)0-2= )-4=)6-1=9)44-8=1 0)7-8= 11)-0=12)9-8=13) 19-0=14)6-3= 15)-8= 16)7-5= 17)2-6=18)0-3=19) 17-1=0)3-5=1)1-2= 2)5-4=23)4-3= 4)5-9=5)1-3=6)2-0=7)7-2=28)8-3=)6-5=0)1-7=1)1-0=)6-0=33)0-1=)-5=)7-0= 6) 12-6=37)-6=8)7-8=)8-5=0)4-4=1)8-8=)4-2=43)7-0= 4)7-1=5)0-0=6)7-9= 7)2-9=48)5-8=)7-3=0) 17-6=100以内整十数加整十数的加法口算练习题姓名：_____________时间：__________做对了_____题0+70= 0+40= 10+90=0+40=0+60=0+20= 0+10=40+30= 0+50=50+40=70+30= 0+40= 0+30=30+40=60+30= 10+20=10+20=0+40=40+40=0+10=0+80=0+40=0+40=50+30=20+10=0+20=20+80= 0+0=10+20=40+40=0+70=70+20= 0+70= 10+70= 0+30=0+70=70+30= 0+40= 0+10=80+10=0+50= 10+80=0+70= 0+80=70+20=50+30= 0+50=0+50=0+40=40+30100以内整十数减整十数的减法口算练习题姓名：_____________时间：__________30-10=30-10=60-20= 0-40= 0-70=0-20=50-30=20-10=80-40=0-70=0-20=80-70=80-10=90-30= 0-60=50-30=0-50= 0-10= 10-10=0-50=0-10=70-30=80-30=40-20=0-10=0-10=0-70=0-80= 0-10=0-20=0-10=0-30= 0-20=50-30=0-40=0-50=0-20=0-30=90-30=0-0=0-10=90-40=80-40=80-30=0-20=做对了_____题一年级100以内整十加减练习题20+5=+50=5-5= 8-8=-2=-8=-6=9-9= +90=7-7=3-3= 6-6=0+8=0+6=6-6=0+7=0+8=4-4=3-3=-8=5-5=0+30=18-8=6-6=-9=0-20=30+30=80-10=90-20=9-9=4-4=-9=-5=-5=7-20=6-50=8-8= 4-80=7-7=-70= 18-8= 7-40=5-60=2-2= 0+20=6-6=9+70= 7-7=60-40=-30=-6=48-40= 2-60= 7-40= 8-80= 18-10=-9=77-7=52-50=10+10= 0+50=+50=-8=59-9=38-8=99-90= 8-8=55-50= 2-2=88-8=23-3=89-80= 7-70= 9-9=30+50= 18-8=81-1=30-20=-50= 7-60=-90= 8-90= 0+30=2-20= 19-9=23-20= 3-3=35+5= 9-60= 0-40=33-3=2-2=2-2=8-30=2-70=4-4=7-7=9-9=76-6= 19-10=7-7= 3-40= 15+5= 3-3=5-20=。

一年级下数学第六单元“100以内加法和减法”知识归纳与易错解析

单元重点知识归纳总结知识点1：整十数加、减整十数的计算方法计算整十数加、减整十数，可以先把整十数分别看成是几个十，再把几个十和几个十相加（减）；也可以把0前面的数相加（减），再在结果的末尾添上1个0。

知识点2：两位数加一位数（不进位）、整十数的计算方法两位数加一位数（不进位），相同数位上的数相加，也就是先把两位数上的个位数与一位数相加，再加整十数。

两位数加整十数，相同数位上的数相加，先把两位数分成整十数和一位数，整十数和整十数相加，再加一位数。

知识点3：两位数加一位数（进位）的计算方法两位数加一位数（进位）的口算方法：可以先把个位上的数与一位数相加，再把加得的数和原来的整十数相加；也可以先把两位数凑成整十数，再加余下的数；还可以先把一位数凑成整十数，再加余下的数。

知识点4：两位数减一位数（不退位）、整十数的计算方法两位数减一位数（不退位），先用个位上的数减去一位数，再与整十数相加。

两位数减整十数，先用整十数减去整十数，再和一位数相加。

知识点5：两位数减一位数（退位）的计算方法两位数减一位数（退位）的计算方法：可以先从个位减起，如果个位不够减，就从十位退1当十，与个位上的数合在一起减一位数，同时十位上的数必须减去1。

也可以把两位数分成10和几十几，先用10去减一位数，再把结果与几十几相加。

知识点6：带有小括号的算式的运算顺序在计算有小括号的算式时，要先算小括号里面的，再算小括号外面的。

知识点7：采用不同的策略解决实际问题解决同数连加的问题，可以用连加计算，也可以列表解决问题。

解决连减同数的问题，可以采用分一分，圈一圈的方法，也可以连减解决问题。

典型易错问题解析易错点1：两位数加整十位、一位数（不进位），不能准确地用相同数位上的数相加【例题1】直接写出得数。

26+30=（） 4+23=（）错误答案:26+30=（29） 4+23=（63）正确答案:26+30=（56） 4+23=（27）错点解析:此题错在计算两位数加整十数和一位数时，把不同数位上的数相加了。

100以内三位数加减整十数两位数的口算

100以内三位数加减整十数两位数的口算加法口算步骤1：准备在进行口算前，首先需要准备一个纸和笔。

将问题写在纸上，以便更好地进行计算。

步骤2：理解问题仔细阅读问题，确保理解每个数字的含义和操作符号。

对于加法问题，需要将两个数相加得到结果。

步骤3：从个位开始计算从个位数开始逐个计算。

将个位数相加，如果结果大于10，需要记住进位的数字。

步骤4：进位如果有进位的数字，需要将其加到十位数的计算结果中。

步骤5：继续计算十位数和百位数按照相同的步骤计算十位数和百位数，将进位的数字一直加到最高位的计算结果中。

步骤6：检查答案计算完成后，用笔和纸验证结果。

将两个数相加，确保计算的结果正确。

减法口算步骤1：准备同样，准备一个纸和笔，以便更好地进行计算和记录。

步骤2：理解问题仔细阅读问题，确保理解每个数字的含义和操作符号。

对于减法问题，需要将两个数相减得到结果。

步骤3：从个位开始计算从个位数开始逐个计算。

将被减数的个位数减去减数的个位数，如果结果小于0，需要向高位借位。

步骤4：向高位借位如果需要借位，将高位的数字减1，并加到当前位的计算结果中。

步骤5：继续计算十位数和百位数按照相同的步骤计算十位数和百位数，将借位的数字一直减到最高位的计算结果中。

步骤6：检查答案计算完成后，用笔和纸验证结果。

将减数减去被减数，确保计算的结果正确。

通过以上步骤，可以进行100以内三位数加减整十数两位数的口算。

口算不仅可以提高孩子的数学能力，还可以培养他们的逻辑思维和解决问题的能力。

让孩子多进行口算练，可以在游戏中研究并享受数学的乐趣。

注意：本文中所有口算结果仅作为参考，如需确认正确答案，请使用计算器或进行手动计算验证。

100以内整十数加减法

100以内整十数加减法班级姓名50 -30 =40 -10 =60 +20 =30 +10 = 60 -40 =80 -50 =30 -10 =10 +10 = 80 +20 =30 -10 =10 +20 =80 +20 = 20 +60 =40 -10 =70 -20 =10 +50 = 80 +20 =40 +50 =40 +60 =30 +20 = 60 +40 =60 +20 =50 -40 =50 -10 = 40 -20 =30 -20 =70 +20 =60 +40 = 50 -20 =70 +10 =20 -10 =60 +20 = 70 -20 =80 -10 =20 +20 =90 +10 = 10 -10 =30 +60 =90 +10 =90 +10 = 40 -40 =80 +20 =50 -20 =40 +60 = 90 -70 =30 +70 =70 -20 =30 -10 = 30 +10 =50 +30 =70 -10 =10 +40 = 80 +10 =10 +10 =40 +40 =90 -20 = 90 -90 =40 -20 =30 +40 =20 -10 = 80 +20 =30 +60 =80 +10 =20 +70 = 40 +50 =10 +40 =90 -60 =90 +10 = 60 +20 =30 +70 =30 -20 =60 -10 = 90 -70 =40 +60 =60 +20 =40 +50 = 10 -10 =80 +20 =20 -10 =80 +10 = 50 -10 =60 -40 =10 +10 =40 +20 = 30 -10 =40 -10 =10 -10 =10 -10 = 30 +60 =40 -30 =90 +10 =20 +10 = 50 -10 =70 -50 =50 -30 =30 +10 = 10 -10 =10 +20 =50 -40 =20 -20 =100以内整十数加减法班级姓名60 -50 =70 -20 =80 +10 =70 +20 = 50 +10 =30 -30 =60 +30 =60 +20 = 50 +10 =40 +10 =90 +10 =90 +10 = 30 +60 =80 +10 =80 +10 =30 +50 = 70 -40 =50 +10 =90 +10 =70 +10 = 50 +20 =60 -40 =30 -10 =90 +10 = 20 -20 =10 +40 =80 -50 =20 -20 = 30 +50 =30 +70 =90 -80 =70 +30 = 10 +40 =40 +40 =70 -70 =80 -40 = 40 +10 =50 +10 =50 -40 =70 -60 = 70 -40 =30 +10 =60 +10 =30 +40 = 70 +10 =40 -40 =60 -20 =20 +40 = 10 +40 =30 -20 =10 +20 =40 +40 = 10 -10 =10 -10 =50 +30 =50 +40 = 90 +10 =40 +20 =80 -10 =30 +50 = 80 +20 =60 -10 =50 +40 =10 +30 = 90 +10 =20 +10 =60 +10 =20 +30 = 20 -10 =70 +20 =30 +50 =10 +20 = 20 -10 =50 -50 =40 +30 =50 -40 = 80 -70 =20 -20 =80 +20 =20 -10 = 40 +10 =90 +10 =70 +20 =10 +10 = 60 +10 =10 -10 =60 +40 =60 -30 = 80 +20 =90 +10 =90 +10 =90 +10 = 80 +20 =40 -40 =90 -20 =30 -20 = 60 -60 =70 -30 =60 -10 =70 +10 = 80 -70 =80 +10 =60 +20 =40 +50 =100以内整十数加减法班级姓名40 -10 =90 +10 =20 -20 =60 +30 = 90 +10 =30 +30 =60 -30 =40 +30 = 30 +40 =70 -20 =40 +30 =50 +50 = 70 +30 =90 +10 =10 +80 =60 -30 = 40 -30 =50 -10 =70 -20 =60 -50 = 10 -10 =80 -10 =30 +20 =20 +50 = 10 +50 =50 +30 =90 -20 =90 +10 = 10 -10 =50 -30 =40 -20 =30 +60 = 60 +10 =20 -10 =90 -60 =30 +30 = 50 +10 =70 +30 =80 -10 =90 +10 = 60 -60 =60 +20 =10 -10 =30 -30 = 10 +80 =70 -60 =60 -30 =90 +10 = 30 +60 =20 -20 =20 -10 =80 -60 = 40 -20 =80 +20 =80 +20 =60 -10 = 30 +40 =30 -20 =30 -20 =80 +10 = 40 -40 =40 +10 =30 +20 =40 +20 = 30 +10 =70 +20 =60 -10 =90 -40 = 30 -20 =20 -20 =40 -20 =20 -20 = 70 -50 =10 -10 =30 +40 =40 -30 = 80 -70 =40 +30 =70 -70 =50 +20 = 40 +60 =20 -10 =80 +20 =70 +10 = 10 +90 =90 -40 =20 -10 =40 +40 = 30 +50 =90 +10 =90 -10 =10 +10 = 70 -30 =60 +30 =60 -10 =50 +30 = 30 +50 =90 +10 =90 +10 =70 +20 = 40 +30 =90 -80 =60 -50 =70 +20 =100以内整十数加减法班级姓名10 +10 =90 +10 =60 -60 =50 +10 = 70 +10 =40 +20 =10 +50 =20 +10 = 10 +90 =60 -30 =20 +50 =20 +10 = 40 -30 =30 -10 =90 +10 =60 -60 = 70 +30 =60 -20 =10 +60 =60 +40 = 10 +30 =60 -40 =50 -50 =60 +40 = 40 +40 =10 +20 =70 +20 =10 +80 = 40 -10 =30 -30 =60 +40 =50 -30 = 50 +50 =30 +40 =70 +30 =70 +20 = 50 -20 =30 +20 =30 +70 =90 -10 = 90 -10 =80 -20 =30 +40 =30 +50 = 60 +40 =80 +20 =70 +20 =90 +10 = 50 -10 =70 -60 =30 +20 =70 -50 = 90 +10 =30 +40 =10 -10 =10 +70 = 20 +80 =90 -30 =20 +80 =40 -20 = 60 +30 =20 +40 =10 -10 =90 +10 = 30 +60 =30 -20 =10 -10 =40 -40 = 50 -50 =80 -30 =80 -70 =40 -40 = 80 +20 =60 +10 =30 -20 =60 +20 = 80 -70 =40 +50 =50 +50 =80 -70 = 70 -50 =70 +20 =80 -50 =40 -40 = 70 +30 =30 -20 =80 +10 =30 -30 = 70 +20 =40 +30 =20 -20 =30 -10 = 90 +10 =50 +30 =40 +20 =50 +20 = 60 -40 =80 +20 =10 +70 =50 -40 = 10 -10 =10 -10 =30 +10 =40 -40 =100以内整十数加减法班级姓名80 -60 =60 -10 =10 -10 =20 -10 = 20 -10 =30 -30 =10 +40 =30 -10 = 40 +20 =80 +20 =10 -10 =50 +40 = 90 +10 =70 +20 =90 -10 =90 -60 = 50 +20 =50 -40 =60 -30 =50 -20 = 60 -20 =70 -30 =60 -10 =90 +10 = 80 +10 =50 +40 =70 +20 =10 +60 = 80 +10 =80 +10 =60 +30 =30 -30 = 10 -10 =30 +30 =40 +30 =50 +50 = 30 +40 =70 -40 =20 +70 =30 +30 = 30 +70 =80 -40 =40 -20 =80 +20 = 10 +30 =10 +60 =10 +20 =40 +30 = 10 -10 =20 -20 =60 +20 =70 +10 = 40 -20 =10 -10 =10 +70 =10 -10 = 50 -30 =40 +10 =40 +30 =70 +20 = 90 +10 =10 -10 =30 +30 =30 -30 = 10 -10 =80 +20 =30 -30 =80 +20 = 40 -40 =30 -10 =60 +20 =30 -30 = 80 +20 =30 -10 =60 +20 =90 +10 = 50 -20 =90 +10 =10 -10 =40 -10 = 70 -50 =50 -50 =90 +10 =80 +20 = 20 +20 =80 +20 =20 -10 =50 +40 = 20 +80 =10 +30 =70 -60 =80 -80 = 10 -10 =50 -10 =90 +10 =40 +40 = 50 -10 =20 +70 =60 -60 =80 -80 = 10 -10 =90 +10 =80 -80 =80 -30 =100以内整十数加减法班级姓名20 +60 =20 +10 =60 -60 =50 -30 = 20 -10 =80 -70 =70 +20 =30 +60 = 30 -20 =50 -40 =60 +30 =70 -60 = 30 -20 =80 -30 =40 +60 =70 -40 = 60 +30 =40 +20 =20 +40 =20 +80 = 40 -10 =90 -20 =10 -10 =60 +10 = 30 -20 =10 -10 =30 +60 =70 -40 = 10 +90 =50 +30 =80 +20 =90 -10 = 60 +10 =60 +20 =30 -20 =70 -50 = 80 +10 =80 -50 =30 +10 =80 +20 = 90 -90 =40 -20 =60 +20 =80 +20 = 10 +80 =80 +20 =50 -10 =20 -10 = 60 -30 =80 -80 =50 +20 =80 -10 = 60 +20 =20 +30 =40 +60 =80 -20 = 70 +30 =70 +10 =20 -20 =20 +40 = 40 +30 =80 +20 =50 +40 =30 +20 = 60 -10 =70 +20 =40 -30 =60 +30 = 80 +20 =40 -30 =40 -40 =40 +10 = 60 -20 =70 -60 =80 +10 =90 +10 = 90 -60 =80 +10 =40 +30 =90 +10 = 80 +10 =50 -40 =90 -80 =20 +60 = 50 -30 =80 +10 =30 +70 =40 -10 = 90 +10 =50 -20 =20 -20 =60 -20 = 10 +70 =70 +30 =80 +20 =40 -30 = 60 +20 =60 +20 =10 -10 =50 +40 = 10 -10 =10 +10 =10 +10 =10 +60 =100以内整十数加减法班级姓名10 -10 =80 -60 =90 +10 =80 -30 = 30 +60 =10 -10 =70 -10 =30 +10 = 70 -50 =60 -20 =90 +10 =60 +20 = 70 -50 =70 +20 =20 -20 =90 -70 = 20 -20 =10 +30 =60 +10 =20 -20 = 40 +60 =70 +30 =10 +30 =30 +40 = 40 -20 =30 +70 =90 +10 =60 +20 = 90 +10 =20 -20 =50 +30 =10 -10 = 90 -60 =20 -10 =30 -10 =50 -20 = 30 +10 =80 -10 =10 +10 =20 +70 = 30 +30 =60 +10 =50 +10 =50 +10 = 90 +10 =50 +10 =10 -10 =60 +10 = 70 -60 =90 -20 =90 +10 =40 +40 = 10 +90 =50 +10 =10 -10 =30 -30 = 10 +70 =40 -10 =60 -50 =40 +40 = 70 -40 =30 -10 =60 +10 =90 +10 = 30 +10 =10 +10 =10 +50 =60 +20 = 90 -40 =10 -10 =90 -40 =10 -10 = 30 +70 =30 +20 =10 +10 =20 +40 = 90 -80 =20 +70 =80 -70 =90 +10 = 30 -20 =20 -20 =50 -40 =40 +40 = 30 -20 =40 -10 =30 -10 =10 -10 = 30 +60 =20 -20 =80 +20 =80 +20 = 40 -10 =40 +40 =40 +40 =40 -40 = 80 -50 =60 +10 =80 -20 =70 -70 = 80 +10 =90 -90 =70 -60 =70 +30 =100以内整十数加减法班级姓名60 -10 =20 +30 =40 +60 =20 +50 = 20 +70 =30 -30 =30 -20 =30 +10 = 60 +30 =10 +20 =40 +30 =60 +40 = 90 -10 =50 +20 =40 +50 =10 +40 = 50 +10 =30 +40 =70 +30 =90 -60 = 40 +60 =90 -20 =40 +40 =90 -70 = 90 -10 =90 +10 =10 -10 =20 -10 = 60 +40 =50 +10 =90 +10 =90 +10 = 90 -40 =80 +20 =20 +70 =20 +20 = 70 -20 =60 +30 =50 +40 =40 -30 = 10 -10 =20 +40 =70 +30 =60 +30 = 90 +10 =70 +30 =10 -10 =50 -10 = 40 +20 =50 +30 =50 +50 =50 -20 = 70 -30 =70 -30 =80 +10 =90 +10 = 70 +30 =70 -40 =90 +10 =10 -10 = 30 -20 =60 -30 =30 -20 =60 +20 = 60 +10 =90 -70 =90 -40 =60 +40 = 30 +10 =10 +20 =70 +30 =30 +30 = 90 -40 =60 +30 =80 -10 =30 -20 = 80 +20 =10 -10 =50 -20 =70 +10 = 40 -10 =20 -10 =70 +20 =40 +50 = 80 -30 =50 +40 =80 +10 =60 +10 = 80 -20 =50 -40 =50 -10 =80 +20 = 40 -20 =70 +20 =80 +20 =50 +20 = 90 -70 =80 -40 =40 +10 =20 +80 = 10 +80 =70 -60 =90 +10 =60 +20 =100以内整十数加减法班级姓名30 -10 =10 +10 =90 -50 =30 +50 = 60 -50 =20 +30 =40 -20 =10 -10 = 60 +40 =40 +50 =80 -40 =30 -30 = 90 -60 =80 -10 =60 +30 =30 -10 = 70 -20 =40 +60 =80 +10 =90 +10 = 80 +10 =90 +10 =40 +60 =80 -10 = 40 -10 =30 -30 =30 -20 =40 -30 = 80 +10 =50 +20 =50 -50 =80 -50 = 40 +50 =90 -70 =80 +20 =10 -10 = 90 +10 =50 -40 =60 -50 =60 +40 = 40 -20 =40 +50 =10 +80 =20 -20 = 80 +10 =50 -10 =60 -40 =30 +50 = 20 +60 =70 -70 =60 +20 =20 -20 = 10 -10 =10 -10 =60 +10 =40 +20 = 50 +40 =20 -10 =40 -40 =60 -10 = 70 -50 =10 +60 =60 +10 =90 -60 = 80 -60 =80 +10 =10 +40 =40 +50 = 20 +20 =50 -30 =30 -30 =20 -10 = 80 +10 =70 +10 =40 -30 =60 +20 = 70 +30 =20 -20 =20 -20 =40 -20 = 70 +30 =50 -20 =20 -10 =40 -30 = 60 +20 =80 +20 =30 -20 =70 -70 = 30 -20 =60 -50 =10 +60 =60 +30 = 70 +10 =50 +30 =40 +30 =30 -10 = 70 -10 =40 -10 =70 -20 =60 -20 = 80 -70 =40 +60 =60 +40 =90 +10 =100以内整十数加减法班级姓名90 -30 =60 +30 =80 +10 =90 +10 = 70 -30 =90 +10 =20 +30 =40 +10 = 40 -20 =60 -10 =20 +70 =50 +10 = 80 +10 =20 +60 =40 -10 =40 +50 = 90 -90 =20 -20 =50 +50 =50 +40 = 60 -30 =10 +30 =60 -50 =20 +60 = 40 -30 =10 +20 =20 -10 =40 +50 = 80 +20 =10 -10 =90 +10 =30 +40 = 70 -70 =30 +70 =10 +60 =70 +30 = 90 +10 =40 +40 =30 +60 =40 -30 = 70 +20 =40 -30 =40 -30 =60 -50 = 90 +10 =80 -80 =20 +70 =20 -10 = 10 +80 =80 -50 =80 -80 =90 +10 = 10 +20 =60 -20 =40 +40 =30 +20 = 10 -10 =40 +30 =70 +30 =60 +10 = 90 +10 =40 -20 =60 -20 =10 +40 = 60 +10 =80 +20 =30 +20 =70 +10 = 80 +10 =80 -70 =40 -20 =10 -10 = 50 -30 =80 +10 =40 -20 =90 +10 = 40 +40 =90 -50 =10 +50 =10 +60 = 60 -60 =10 +50 =70 +10 =90 +10 = 70 -20 =80 +10 =30 +10 =10 +40 = 60 -10 =40 -30 =10 -10 =40 +30 = 60 +30 =30 +10 =70 +20 =10 +70 = 20 -10 =20 +70 =90 +10 =30 +30 = 60 +40 =10 -10 =30 +60 =10 +90 =100以内整十数加减法班级姓名40 +60 =20 +30 =90 +10 =30 -20 = 20 -20 =40 -30 =40 -40 =70 +10 = 30 +60 =90 -40 =60 -40 =40 -20 = 40 +60 =70 +10 =20 +40 =30 +60 = 80 +20 =60 +30 =90 -10 =60 -40 = 80 +20 =40 +20 =70 +10 =10 +40 = 20 +30 =30 +20 =10 -10 =60 +10 = 90 -30 =50 -30 =10 +30 =80 -40 = 10 -10 =10 +40 =20 +40 =40 +60 = 60 +40 =20 +40 =30 +10 =60 +20 = 70 -20 =60 +10 =40 +20 =20 -20 = 30 +30 =90 +10 =10 +60 =70 -30 = 70 -10 =80 -80 =90 +10 =70 -10 = 50 +30 =90 +10 =20 +10 =70 -20 = 50 +20 =90 -60 =70 -10 =40 -30 = 20 +80 =50 +50 =40 +30 =70 -40 = 20 +10 =30 +40 =70 -60 =30 -30 = 40 -30 =90 +10 =40 +60 =50 +20 = 10 +50 =50 -50 =20 +10 =50 -50 = 20 -10 =80 -20 =20 -10 =40 -20 = 90 +10 =20 +60 =70 -70 =10 -10 = 90 +10 =60 +30 =50 +10 =90 +10 = 80 -60 =90 -50 =90 -20 =60 +10 = 60 +30 =90 +10 =20 +40 =70 -30 = 60 +10 =50 +30 =80 +10 =30 -30 = 90 -10 =40 -10 =70 -70 =30 -30 =100以内整十数加减法班级姓名80 +10 =50 -30 =50 +30 =20 +10 = 20 -10 =30 -10 =50 -20 =90 +10 = 50 +40 =40 -40 =60 +10 =80 -60 = 20 +40 =50 +40 =60 -20 =80 -10 = 40 +50 =40 +60 =80 +10 =10 -10 = 30 +20 =80 +20 =10 -10 =70 +30 = 50 -30 =40 -40 =10 +10 =80 -10 = 40 -20 =80 +10 =80 +20 =40 +10 = 40 +10 =30 +40 =30 +20 =80 -70 = 10 +90 =50 +50 =90 +10 =30 +60 = 60 +20 =60 +10 =90 -50 =30 +10 = 80 +20 =40 +60 =70 +20 =50 -50 = 70 -40 =60 -10 =10 +80 =10 -10 = 20 -10 =40 -30 =60 -30 =90 +10 = 60 -30 =50 +20 =60 +20 =60 +30 = 70 +30 =30 +70 =80 -20 =30 -10 = 90 -50 =30 -10 =10 +10 =40 -40 = 60 +10 =60 -60 =50 +30 =30 -10 = 70 +10 =20 -10 =20 -10 =70 -10 = 50 -10 =30 -10 =90 -70 =20 -10 = 70 +20 =30 +40 =50 -10 =60 +20 = 60 -60 =90 +10 =70 +10 =60 -10 = 40 +20 =60 +40 =40 -30 =70 -20 = 10 +70 =70 -30 =40 +10 =90 -20 = 70 +30 =20 +20 =50 +10 =70 -50 = 40 +50 =70 +30 =30 -20 =80 -70 =100以内整十数加减法班级姓名20 -10 =80 +20 =40 +20 =60 -10 = 80 -40 =10 +60 =40 -10 =60 +10 = 30 -30 =80 +20 =70 -30 =90 +10 = 40 -10 =10 -10 =90 +10 =40 -10 = 10 +50 =50 -50 =30 +30 =50 -30 = 50 -10 =30 +10 =10 +50 =70 -10 = 50 +40 =50 +20 =20 -20 =90 +10 = 90 -70 =70 +20 =60 +30 =80 -50 = 20 -20 =20 -20 =70 +20 =30 +40 = 20 +30 =70 -10 =90 +10 =60 -20 = 50 +40 =20 -20 =70 -30 =90 +10 = 80 +20 =50 +50 =90 -60 =20 -20 = 90 +10 =60 +20 =80 -80 =90 +10 = 50 +10 =50 -20 =60 +30 =60 -30 = 80 +10 =30 -10 =10 +30 =80 +20 = 10 -10 =10 -10 =80 -50 =70 -40 = 10 +40 =40 +30 =50 +10 =90 +10 = 60 -60 =90 -80 =70 +30 =30 +60 = 10 -10 =20 -20 =80 -60 =50 +50 = 30 -30 =40 +10 =70 -20 =60 +40 = 40 +50 =30 +70 =20 +70 =80 +20 = 80 +10 =50 +40 =40 -10 =40 -30 = 70 -50 =10 +60 =50 -20 =20 +20 = 60 +40 =70 -40 =60 +20 =60 +10 = 20 +60 =10 -10 =60 +40 =70 -20 = 30 -20 =90 -20 =90 +10 =10 +20 =100以内整十数加减法班级姓名10 +80 =80 -70 =60 -10 =80 +10 = 40 +40 =90 +10 =30 -10 =80 +10 = 30 +40 =10 +70 =70 +10 =20 +40 = 80 -30 =50 -40 =90 -90 =10 +40 = 10 -10 =70 +20 =80 +20 =50 +50 = 70 +10 =60 +10 =50 +20 =40 +30 = 70 +30 =80 -20 =70 +10 =50 -30 = 60 +30 =10 +90 =30 -20 =20 +80 = 30 -30 =10 +80 =60 -10 =40 +60 = 90 +10 =80 +20 =80 +20 =30 +10 = 20 +10 =10 +60 =60 -10 =10 +90 = 80 +20 =60 -20 =20 +30 =40 +40 = 40 -30 =60 -30 =50 +20 =50 +10 = 10 +40 =30 -10 =30 +40 =40 -10 = 60 -20 =50 +10 =20 -10 =70 +20 = 50 -10 =10 +40 =60 -60 =90 +10 = 70 -60 =60 -40 =70 +30 =60 +40 = 20 +30 =20 +20 =60 -50 =70 +30 = 60 +40 =30 +50 =80 -40 =10 +80 = 90 -40 =40 -30 =90 +10 =50 +10 = 70 +30 =70 +10 =60 +20 =20 -10 = 50 -10 =50 +20 =80 +10 =60 +10 = 50 -30 =90 +10 =40 +30 =20 -10 = 30 +50 =90 -30 =40 +20 =70 -40 = 10 +20 =80 -50 =40 +60 =20 +30 = 90 +10 =50 +50 =20 +70 =30 +40 =100以内整十数加减法班级姓名70 -30 =10 +30 =40 -10 =60 +30 = 50 -50 =20 +70 =30 +50 =70 -30 = 10 -10 =10 -10 =40 +10 =10 -10 = 60 -60 =60 -30 =20 +10 =40 +40 = 70 +20 =80 -50 =70 +10 =40 +60 = 10 +20 =80 +10 =90 +10 =30 +50 = 30 +20 =70 -60 =10 +20 =10 +10 = 80 +20 =10 -10 =20 +30 =50 +20 = 20 +20 =80 -10 =20 +80 =10 -10 = 50 +20 =40 -20 =30 -30 =50 -30 = 90 -40 =80 +10 =30 +70 =90 -50 = 80 +10 =80 -40 =50 -10 =20 +70 = 40 +30 =60 -60 =30 -10 =50 -50 = 40 +50 =50 +40 =80 +10 =40 +20 = 30 +70 =70 -60 =40 +40 =60 -20 = 20 -20 =10 -10 =60 +10 =10 +10 = 20 +60 =60 -30 =50 +10 =40 -10 = 60 +20 =80 +20 =90 -60 =60 +20 = 30 +70 =60 -40 =80 +20 =50 +30 = 10 -10 =50 +50 =30 +10 =30 +50 = 60 -60 =10 +60 =80 +20 =50 -20 = 20 -20 =40 +50 =80 -70 =60 +10 = 80 -60 =80 +20 =80 +20 =70 +30 = 80 +10 =70 -60 =10 +30 =90 +10 = 70 +10 =40 +50 =30 -10 =10 -10 = 90 -40 =60 +30 =40 +30 =40 +10 =100以内整十数加减法班级姓名90 +10 =40 -30 =70 -10 =40 -10 = 10 +20 =10 +30 =50 +30 =60 +10 = 70 +20 =40 +60 =10 +90 =60 -50 = 50 +30 =20 +60 =20 -20 =30 +60 = 70 -20 =90 +10 =30 +30 =20 +70 = 70 +30 =80 +10 =80 -70 =10 -10 = 90 +10 =80 +20 =30 -20 =90 +10 = 10 +30 =20 +40 =60 -60 =20 +80 = 80 +20 =60 +20 =20 +40 =20 +60 = 30 +30 =50 +40 =30 +40 =10 -10 = 10 +20 =70 +20 =60 -10 =80 +20 = 70 -40 =90 -80 =80 +10 =50 -20 = 60 -50 =50 -30 =10 -10 =10 +10 = 10 +20 =50 -50 =50 +30 =90 +10 = 20 +50 =30 -10 =30 -20 =80 +20 = 80 +20 =20 -10 =40 -10 =30 -20 = 70 +20 =50 -40 =60 +10 =20 -10 = 40 +10 =90 -40 =30 +10 =60 +40 = 90 +10 =50 +50 =40 +10 =10 +70 = 70 -50 =70 +10 =10 +70 =70 +10 = 90 -20 =40 +20 =40 +10 =90 -10 = 20 -20 =70 +10 =30 -20 =90 -50 = 40 +50 =40 +60 =70 +20 =80 +20 = 50 -20 =20 +70 =50 +20 =40 -10 = 70 -70 =20 +60 =20 -20 =40 +10 = 40 +30 =30 +50 =90 +10 =80 +10 =100以内整十数加减法班级姓名40 -10 =60 +20 =20 -20 =40 +60 = 10 +70 =40 +50 =60 -40 =20 +40 = 70 -70 =90 +10 =90 +10 =10 -10 = 80 +20 =50 +40 =30 -10 =70 -60 = 20 -20 =40 -10 =80 +20 =90 -80 = 30 -30 =60 -40 =40 +10 =20 -20 = 20 +10 =40 +30 =70 +10 =90 -40 = 40 +50 =90 +10 =70 +20 =90 -90 = 40 -20 =40 +10 =30 +70 =10 -10 = 60 -40 =40 +60 =90 +10 =30 -20 = 80 -30 =70 +20 =30 +30 =30 -20 = 70 -10 =80 +20 =80 -80 =20 -10 = 90 +10 =20 +40 =30 -30 =70 -70 = 30 +30 =30 -30 =40 -30 =30 +60 = 10 -10 =30 -10 =40 -20 =30 -20 = 90 +10 =40 +60 =80 -60 =20 +70 = 10 +20 =60 -40 =60 -40 =60 -50 = 70 -70 =20 -10 =10 +50 =50 +50 = 20 +20 =90 -70 =80 +20 =70 -60 = 60 -20 =50 +20 =90 +10 =60 +20 = 40 +40 =90 +10 =70 -70 =30 -30 = 60 +40 =30 +50 =20 +80 =20 -20 = 20 +60 =90 -30 =80 -10 =80 -50 = 40 -30 =20 -10 =40 -20 =70 +20 = 20 -10 =10 +80 =30 -20 =10 -10 = 70 -20 =10 -10 =30 -10 =10 +40 =100以内整十数加减法班级姓名90 +10 =20 +70 =80 +10 =60 +10 = 70 +10 =20 +10 =80 +10 =40 -30 = 10 +60 =80 +20 =70 +20 =60 -50 = 20 +30 =30 -20 =20 +60 =60 -40 = 90 +10 =60 +40 =90 +10 =80 -60 = 50 -50 =10 -10 =90 +10 =40 +10 = 60 -60 =10 -10 =50 +20 =60 +20 = 60 +10 =60 -50 =40 -20 =90 -80 = 90 -50 =90 +10 =40 +60 =20 +40 = 10 -10 =30 -30 =80 +20 =80 -60 = 50 +40 =20 -20 =40 +60 =50 -40 = 80 +10 =60 +10 =30 +40 =50 +40 = 90 -40 =90 -10 =40 -40 =10 +80 = 30 +30 =10 +70 =10 -10 =70 -60 = 50 -20 =50 +30 =80 +20 =70 -70 = 50 -30 =40 +40 =20 +50 =90 +10 = 20 -20 =50 -20 =30 +10 =60 -20 = 60 +10 =80 -20 =10 -10 =70 -20 = 90 +10 =90 +10 =90 +10 =70 -20 = 20 -10 =40 +60 =70 -40 =40 +40 = 90 -30 =80 -80 =80 +10 =80 -40 = 90 +10 =50 +20 =10 -10 =40 -40 = 50 -20 =90 +10 =40 -30 =90 -70 = 40 +40 =40 +50 =80 -70 =10 -10 = 10 -10 =80 -50 =50 -40 =90 +10 = 10 +40 =70 +30 =20 -10 =90 +10 =100以内整十数加减法班级姓名70 -40 =10 +10 =70 -40 =30 -10 = 10 +30 =60 -30 =10 +20 =30 +30 = 90 -10 =90 -90 =70 -70 =80 -50 = 30 -20 =60 +40 =40 -10 =70 -60 = 70 -70 =10 -10 =60 +20 =20 -10 = 60 +20 =90 -90 =50 +30 =60 +30 = 30 -10 =30 +60 =80 -30 =10 +80 = 10 -10 =20 -20 =10 +10 =50 +30 = 50 +40 =60 -40 =80 +20 =80 -30 = 10 -10 =40 +40 =10 +80 =50 -10 = 90 -40 =50 -20 =90 +10 =90 +10 = 60 -10 =40 +40 =50 +20 =10 -10 = 70 +20 =60 +10 =30 +10 =60 +30 = 90 -20 =20 -10 =80 +20 =10 -10 = 30 +20 =40 -20 =90 -50 =50 +20 = 30 +40 =80 +10 =20 +30 =60 -60 = 70 +20 =30 +50 =30 -20 =20 -10 = 10 -10 =30 +40 =60 +40 =80 +10 = 80 -30 =20 +80 =40 -40 =30 -30 = 20 +20 =50 -20 =50 -50 =20 +60 = 40 -40 =40 -40 =80 +20 =30 -10 = 40 +40 =20 +70 =80 +10 =30 +10 = 20 +30 =30 +30 =80 -30 =90 +10 = 20 -10 =10 +30 =60 +30 =60 -50 = 30 -20 =10 +20 =70 +30 =60 +40 = 30 +40 =90 +10 =40 +40 =20 +60 =100以内整十数加减法班级姓名80 +20 =70 -50 =50 -40 =30 -20 = 80 -30 =50 -20 =70 +20 =80 +20 = 90 +10 =90 -90 =80 +10 =10 -10 = 40 +10 =70 +20 =50 +50 =60 -40 = 70 +30 =50 +20 =20 +10 =10 -10 = 90 -30 =90 +10 =50 +40 =90 +10 = 50 -10 =50 +50 =80 +20 =80 -40 = 80 -30 =10 +80 =70 +30 =40 -40 = 90 +10 =60 +20 =50 +20 =40 -10 = 80 +20 =50 -10 =60 +30 =30 -30 = 10 -10 =90 +10 =50 +30 =90 +10 = 70 +30 =70 +20 =60 -40 =90 +10 = 20 -10 =40 +40 =20 +30 =20 -10 = 20 +80 =90 -50 =50 -40 =50 -30 = 90 +10 =30 -10 =30 -10 =30 -30 = 10 +70 =10 -10 =30 -20 =70 +20 = 30 -20 =90 +10 =30 +10 =40 -20 = 60 -10 =10 +60 =80 +20 =70 -30 = 30 +10 =90 -90 =10 -10 =40 +20 = 90 +10 =90 +10 =50 -50 =20 -10 = 40 -30 =90 -10 =10 +40 =10 +10 = 90 +10 =10 -10 =80 +10 =50 -50 = 60 -40 =90 +10 =50 +30 =70 -20 = 30 -10 =20 +80 =10 -10 =80 +20 = 40 -30 =70 -60 =90 +10 =60 +40 = 30 +20 =60 +10 =40 +30 =90 -50 =。

整十数加整十数

（一）看图列式
看图可以列加法算式，也可以列减法算式。
40＋20＝ 60 60－20＝ 40 60－40＝ 20
三、知识应用
（二）算一算
3＋2 ＝5 3 2 ＝ 50 30＋20 6－4 ＝2 6 60－40 4 ＝ 20 4 4＋5 ＝9 4 40＋5 50＝ 90 7 7－3 ＝ 4 70－30 7 3 ＝ 40
5元5角
12.00元 12元
8.80元 6.90元祝贺小朋友闯关成功！ 8元8角 6元9角
每个 0.50元
每个 1.20元
每个0.80元
每2个不同形状的气球捆在一起，可以怎么捆？
5角 1元2角
1元2角 8角
8角 5角
1元7角
2元
1元3角
帮我算算每种买法要多少钱呢？
我会算
3+2= 5 6-3 = 3 5+1= 6 5+3= 8 7- 4= 3 8- 2= 6
2+7= 9- 4= 7- 2= 8- 5= 2+5= 5+4=
9 5 5 3 7
9
我会想
80里面有( 8 )个10; 50里面有5个( 十 );
( 70 )里面有7个十; 6个十是( 60 ).
二、探究新知
（一）情境引入，提出问题
图上的老师和同学们正在做什么？
二、探究新知
（一）情境引入，提出问题
你是怎样算的？
二、探究新知
还可以怎样想？你是怎样算的？
（二）整十数加整十数
30－20＝ 10
我是这样想的： 3个十减2个十我也是用摆小棒得1个十，是10 。我还会用计数器来算。来算的。
二、探究新知
还可以怎样想？你是怎样算的？

人教版数学一年级(下册)100以内的加法和减法(一)整十数加、减整十数

方法二借助计数器计算。
30 −
10
20 =
十位个位
方法三根据数的组成计算。
30 - 20 = 10
3个十 - 2个 = 1个
十
十
一共有30本书，右边有20本，左边有多少本？
30 −
10
20 =
1.看图列式。
课堂练习
50 + 20 70 =70 – 20 = 50 70 – 50 = 20 看图可以列加法算式，也可以列减法算式。
40+30 = 70（元）答：要付70元
整十数加、减整十数的计算方法
课堂小结
整十数加、减整十数的计算方法
整十数加整十数：把十位上的数相加，得几就是几十。
整十数减整十数：把十位上的数相减，得几就是几十。
0 1
课后练习十三。
0 2
课时练。
课后作业
教材第62页做一做第1题
2.算一算，你有什么发现？
3＋2 ＝ 5
4＋5 ＝9
30＋220 ＝ 50 6－4 ＝ 2
40＋550 ＝9 7－3 ＝04
60－440 ＝2
70－330 ＝4
发现：整十数0加、减整十数，先把十0 位上
的数相加、减，再在得数后面添上0。
教材第62页做一做第2题
3.
50元 40元 30元（1）买一件和一条，要付多少钱？
学习目标
【重点】掌握整十数加、减整十数的计算方法。
【难点】理解整十数加、减整十数的算理。
课堂导入
在开始上课之前，我们先来做一个数学健身操吧！
3 + 2 =5 6 - 3 =3 9 - 4 =5
2 + 7 9= 5 + 38= 7 - 25=

100以内整十数的加减法练习题

100 以内整十数的加减法练习题精品文档100 以内整十数的加减法练习题100 以内整十数加整十数的加法口算练习题姓名: ____________ 时间: __________ 做对了____题0+70= 0+40= 10+90=0+40=0+60=0+20= 0+10=40+30= 0+50=50+40=70+30= 0+40= 0+30=30+40=60+30= 10+20=10+20=0+40=40+40=0+10=0+80=0+40=0+40=50+30=20+10=0+20=20+80=0+0=10+20=40+40=0+70=70+20= 0+70= 10+70= 0+30=0+70=70+30= 0+40=0+10=80+10=0+50= 10+80=0+70= 0+80=70+20=50+30= 0+50=0+50=0+40=40+30100 以内整十数减整十数的减法口算练习题姓名: ___________ 时间: _________30-10=30-10=60-20= 0-40=0-70=0-20=50-30=20-10=80-40=0-70=0-20=80-70=80-10=90-30= 0-60=50-30=0-50= 0-10= 10-10=0-50=0-10=70-30=80-30=40-20=0-10=0-10=0-70= 0-80= 0-10=0-20=0-10=0-30= 0-20=50-30=0-40=0-50=0-20=0-30=90-30=0-0=0-10=90-40=80-40=80-30=0-20= 做对了____ 题1 / 5精品文档100 以内整十数加整十数的加法口算练习题班级: 姓名:__ __ 时间:__ _ 做对了___ 题0+70= 0+40= 10+90=0+40=0+60=80+20=0+10=0+30=0+50=0+40=70+30=0+40=0+30=0+40=0+30=10+20= 10+20=0+40=0+40=0+10=20+80=0+40=0+40=0+30=0+10=70+20=0+80=0+0= 10+20=0+40=20+70=0+20=0+70= 10+70=0+30=30+70=0+30=0+40=0+10=0+10=40+50= 10+80=0+70=0+80=0+20=50+30=0+50=0+50=0+40=0+30=100 以内整十数减整十数的减法口算练习题姓名: _____________ 时间: __________ 做对了 ____ 题0-10=30-10=60-20=70-40= 0-70=0-20=50-30=20-10=80-40= 0-70=0-20=80-70=80-10=90-30= 0-60= 0- 30=60-50=30-10=10-10= 0-50=0-10=70-30=80-30=40-20=0-10=0-10=90-70=80-80=80-10= 0-20=0-10=60-30=60-20=50-30= 0-40=0-50=60-20=30-30=90-30= 0-0=0-10=90-40=80-40=80-30= 0-20=2 / 5精品文档100 以内加减法口算练习题班级姓名: ___ 时间:__ 做对了___ 题46-40=-30=9-90=8-30=96-90= 7-60=72-70= 3-80=1-90=6-30=6-60=52-50=61-60= 4-20=3-60=7-50=43-40=42-40=93-90= 8-60=3-40=9-50=92-90=71-70= 1-1=57-7=86-6=87-7=35-4=75-5=28-8=77-7=38-8=74-2=84-4=-6= 5-5= 4-4=75-9=82-2=97-7=42-2=1- 3=61-1= 12-6=17-6=62-2=78-8= 18-6= 7-7=第六章100 以内的加法和减法第 1 节整十数加、减整十数一、口算。

100以内的加法和减法(整十数)

教学设计：2025春季人教版一年级数学下册《100以内的加法和减法（整十数）》教学目标（核心素养）1.知识与技能：学生能够理解并掌握100以内整十数的加法和减法的计算方法，能够准确进行口算和笔算。

2.过程与方法：通过观察、比较、归纳等数学活动，培养学生的逻辑思维能力、运算能力和问题解决能力。

3.情感态度价值观：激发学生对数学学习的兴趣，培养认真细致的学习态度和良好的计算习惯。

教学重点•掌握整十数加法和减法的计算方法，理解算理。

•能够准确、快速地进行口算和笔算。

教学难点•灵活运用整十数加法和减法解决实际问题，理解计算过程中的数学意义。

教学资源•多媒体课件（包含例题讲解、动画演示、互动练习）•学具（如计数器、数字卡片）•实物情境图（如超市购物、班级分组等）•分组合作学习任务卡教学方法•直观演示法：利用多媒体和学具直观展示计算过程，帮助学生理解算理。

•讲授法：通过教师讲解，明确整十数加法和减法的计算方法。

•练习法：设计多样化的练习题，让学生在实践中巩固所学知识。

•合作探究法：组织小组合作学习，鼓励学生相互讨论、共同解决问题。

教学过程导入新课•情境导入：创设一个超市购物的情境，如小明妈妈去超市买了两袋大米，每袋重30斤，请问两袋大米一共重多少斤？引导学生思考如何计算30+30，从而引出整十数的加法。

•复习旧知：快速回顾20以内数的加法和减法，特别是整十数的概念，为新课学习做铺垫。

新课教学1.整十数加法：•理解算理：通过多媒体展示计数器图，引导学生理解整十数加法就是十位上的数相加，个位上的0保持不变。

例如，计算30+40时，只需将十位上的3和4相加得到7，个位上的0不变，所以结果是70。

•例题讲解：详细讲解几个典型例题，如50+20、70+10等，强调整十数加法的计算方法。

•练习巩固：设计多样化的练习题，包括直接计算、填空、选择正确答案等，让学生独立完成并分享答案。

2.整十数减法：•理解算理：同样利用计数器图，引导学生理解整十数减法就是十位上的数相减，个位上的0保持不变。