五年级小数竖式计算
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68.8÷4=85.44÷16=67.5÷15=289.9÷18=101.7÷9=243.2÷64=16.8÷28=15.6÷24=0.138÷15= 1.35÷27=0.416÷32= 3.64÷52=91.2÷3.8=0.756÷0.18=51.3÷0.27=26÷0.13=210÷1.4= 2.688÷0.56=10.625÷25=126÷45=
10÷25= 2.7÷7.5=15÷0.06=25.6÷0.032=14.36÷2.7≈8.33÷6.2≈ 1.7÷0.03≈32÷42≈
1.25÷1.2≈
2.41÷0.7≈ 4.5×0.07= 6.3÷0.09=
2.5×
3.6= 19.8÷3.3= 5÷0.25= 0.76÷0.4= 2.36×0.22= 2.8×
4.58= 3.57÷4.2= 82.8÷36=
45×2.46= 3.6÷0.24= 382.5÷45= 6.4×5.48= 13.42×4.73 = 9.65×8.12 = 7.23×1.2 = 6.3×12 = 2.14×8.3 = 4.9×1.12 = 21.98×2.31 = 0.24×28.37 = 29.13×3.14 = 9.88×11.21 = 5.5÷11 = 7.5÷0.5 =
12÷0.12 = 6.75÷0.25 = 12÷0.75 = 21÷0.7 = 16.9÷0.13= 1.55÷3.9= 3.7×0.016= 5.63÷6.1= 0.3÷0.15= 0.5×0.12= 0.6×3÷0.6×3= 1.4×5=
0.1×0.01= 0.35×8= 7.35÷7= 1÷0.01=
4.692÷2.3=
5.5×2.02= 3.14×0.68= 3.07×1.5=
5.26÷1.6= 0.85×
6.3=52.6×0.252=35÷73=
4、判断。
(1)如果两个因数的积不是小数,那么这两个因数一定不是小数。
()(2)一个不等于0的数的1.02倍一定比原数大。
()
(3)因为12×35=420,所以1.2×3.5=42.()
(4)在表示近似数时,5.0也可以写成5。
()
(5)整数乘法的交换律、结合律和分配律,对于小数乘法同样适用。
()(6)0.25×9.9=0.25×(10-1)=0.25×10-0.25。
()
(7)4.10与4.1大小相等,表示意义也相同。
()
(8)3.994精确到百分位约是4.00.()
(9)一个数(0除外)除以小数,商一定比这个数大。
()
(10)两个数相除的商是0.9,被除数不变,除数扩大10倍,商是9.()5、把下列各式中的乘积点上小数点,使等式成立。
9.36×2.7=252720.89×6.43=57227
52.1×1.98=10315826.15×3.4=8891
4.5×0.07= 6.3÷0.09= 2.5×3.6= 19.8÷3.3=
5÷0.25= 0.76÷0.4= 2.36×0.22= 2.8×4.58=
3.57÷
4.2= 82.8÷36= 45×2.46= 3.6÷0.24= 382.5÷45= 6.4×
5.48= 13.42×4.73 = 9.65×8.12 =\ 7.23×1.2 =
6.3×12 = 2.14×8.3 = 4.9×1.12 = 21.98×2.31 = 0.24×28.37 = 29.13×3.14 = 9.88×11.21 =
920÷40= 780÷60= 960÷40= 79×97=
28×32=54×25 =48×61=23×37= 46×58= 326×52= 45×12=33×12= 32×69= 0.828 ÷ 36 97.2 ÷ 24 7.65 ÷ 0.85
58.8 ÷ 0.28 58.9 ÷ 31 7.67 ÷ 5.9 83.2 ÷ 3.2 97.2 ÷ 5.4 8.4÷24 18÷48 23÷184 7.65÷25 0.98÷35 2.525÷25 84÷56 140.7÷3 8 2.8÷72 1.56÷2.4= 1.44÷0.015=
2.898÷0.18= 85.44÷16 42.84÷7 101.7÷9 67.5÷15 230.4÷6 21.24÷36 0.736÷23 4
3.5÷12 35.21÷7 39.6÷24 6.21÷0.03
85.44÷1642.84÷7101.7÷967.5÷15
230.4÷621.24÷360.736÷2343.5÷12
35.21÷739.6÷24 6.21÷0.03210÷1.4 51.3÷0.2791.2÷3.80.756÷0.18 0.66÷0.3
11.97÷1.569.6÷2.938.4÷0.815÷0.06 0.828 ÷ 36 97.2 ÷ 24 7.65 ÷ 0.85 12.6 ÷ 0.28 8.61 ÷ 2.1 58.75 ÷ 0.25 220.3 ÷ 0.7 58.8 ÷ 0.28
58.9 ÷ 31 7.67 ÷ 5.9 83.2 ÷ 3.2 97.2 ÷ 5.4 8.4÷24 18÷48 23÷184 7.65÷25
0.98÷35 2.525÷25 84÷56 140.7÷3 82.8÷72
1.56÷
2.4= 1.44÷0.015= 2.898÷0.18= 85.44÷16
21.24÷36 0.736÷23 43.5÷12 35.21÷7 39.6÷24 6.21÷0.03 85.44÷16 42.84÷7 101.7÷9 67.5÷15 230.4÷6 21.24÷36 0.736÷23 43.5÷12 35.21÷7 39.6÷24
6.21÷0.03 210÷1.4 51.3÷0.27 91.2÷3.8 0.756÷0.18 0.66÷0.3 11.97÷1.5 69.6÷2.9 38.4÷0.8 15÷0.06 1.44÷0.015= 2.898÷0.18= 1.44÷0.015= 2.898÷0.18= 0.328÷8= 3.51÷3=
7.21÷7= 23÷25= 3.64÷14= 37.8÷28=
600÷50= 42×0.16= 84×0.25= 0.36×0.9=
2.4÷3= 20×0.5= 0.8×6= 1000×0.09=
1.35÷27= 58×0.32= 1.08×52= 8.5×0.54= 5.62×
2.4= 0.28×0.16= 1.06×0.82= 0.06×0.75= 0.41×2.01=
0.63×0.12= 3.5×2.01 1.26÷0.84=
1.45×6.5+0.55×6.5 6.12×99+6.12 5.9×101-5.9
8÷()=0.8 25.8÷()=0.258 452÷( )=45.2 70÷( )=0.7 800.9÷( )=80.09 360÷( )=0.36 6.54×1.04= 0.522÷0.18=
33÷7.5= 10÷0.8= 0.6÷0.015= 0.532÷0.4=
0.05÷0.025= 0.21÷0.012= 3.6÷4.8= 8.01÷0.9=
0.51÷0.85= 6.3÷0.42= 25.2÷63= 0.456÷1.5=
16.43+3.6= 21.5-20.83= 5.7+4.33= 20.1-6.9= 0.65+19.5= 0.29×3.18(保两) 4.48÷2.8+1.5
35.4-9.6÷(2.65-1.05) 6.3×【(0.9+1.8)÷4.5】
以下简便运算
12.5×32×0.25 29.4+1.72+3.56 5.17-1.8-3.2
13.75-(3.75-6.48) 3.45+7.7+16.55+1.3 21.63-(8.5+9.63)
36.59-(6.59+7.3)7.23+6.84-0.84+2.77
0.312×12= 42×0.16= 84×0.25= 58×0.32=
1.08×52= 54×0.47= 420×3.5= 9.3÷100×1000=
2871÷0.33= 50-16.66= 6×0.73= 3.82×0.45=
3.1×
4.05= 0.522÷0.18= 7.54÷0.26= 91.2÷0.024=
1、用竖式计算
0.396÷1.2=0.756÷0.36=7.15×22= 90.75÷3.3= 3.68×0.25= 16.9÷0.13= 1.55÷3.9= 3.7×0.016=
13.76×0.8= 5.2×0.68.4×1.3 = 13.95÷3.1=
6.4×2.5= 4.48×4.4= 5.25×15= 4.6×0.6=
35.4×4.2=0.042×0.54=0.76×0.32 0.25×0.046=
0.45×0.73=0.43×0.28= 2.52×3.4= 1.08×25=
0.12×0.5×0.16=(保留两位小数) 3.25×9.04=(用除法验算)4.8×0.25=0.125×1.4≈10.75÷12.5=(用乘法验算)
2.5÷0.7=(保留三位小数)10.1÷
3.3=(商用循环小数表示)8.9×0.05= 3.08×0.43= 1.5×26.7= 5.22÷29= 18.72÷3.6= 2.5×7.1×4 =16.12×99+16.12=
5.2×0.9+0.9=7.28×99+7.28= 4.3×50×0.2=
64-2.64×0.5=26×15.7+15.7×24=(2.275 +0.625)×0.28=
3.94+3
4.3×0.2= 1.2×(9.6÷2.4)÷4.8=8.9×1.1×4.7= 2.7×
5.4×3.9= 3.6×9.85-5.6=8.05×3.4+7.6=
6.58×4.5×0.9= 2.8×0.5+1.58= 4.85 + 0.35 ÷ 1.4=
8.7 × 17.4 - 8.7 × 7.4=(1.25-0.125)×8=
32+4.9-0.9= 4.8-4.8×0.5= 4.8×100.1=
56.5×99+56.5= 7.09×10.8-0.8×7.09=
12.5×0.4×2.5×8= 0.87×3.16+4.64= 2.13.×0.×8257= 9.5×101=0.68 ÷(5.2 -3.5)× 1.25=40.5 ÷ 0.81 × 0.18= 4.8 ×(15 ÷ 2.4)= 6.81+6.81×99=0.25×185×40=
4.4×0.8-3.4×0.8=(9.37+9.37+9.37+9.37)× 2.5= 4.2.×1.+1.×1.75= 2.37×6.3+2.37×3.7= 2.5×1.25×0.32= 3.8×10.1= 2.5×(3.8×0.04=)7.69×101=
3.8×10.1 = 0.25×39+0.25=0.125×72= 1
4.7÷0.07= 46×0.33+54×0.33= 6.81+6.81×99= 0.25×185×40=
(8×5.27) ×1.25= 6.8×0.75÷0.5= 1.53+23.4÷7.2=
3.75÷0.125–2.75=13.5×0.98=12.5×8.8 = 9.5×99= 1.2×1.4=0.37×8.4= 3.14×2.8=0.15×2.34=0.85×1.12=0.86×5.4=40÷14=45.5÷38=
26.37÷31=1560÷35= 4.8÷2.3= 1.55÷3.9=
7.2÷2.1= 3.87÷7=146.4÷13=0.382×0.13=
5.63÷
6.1= 2.84×0.03=26.37÷31=32÷42=2.84×0.03= 4.8÷23=0.382×0.13= 4.2÷4.5=2.52×3.4= 1.08×55=0.12×0.44= 0.24×2.15=
0.25×0.046= 6.03×0.25= 2.93-1.837= 3.568÷16=
26.55÷59=117÷18=9.48+1.36=36.9÷18=
四、单位换算(12%)
0.24米=()厘米0.09吨=()千克
8.54平方分米=()平方厘米 3.64千米=()米
140平方厘米=()平方分米785米=()千米
23分米=()米60克=()千克
2.06千克=()克3元4角=()元
15厘米=()米7吨60千克=()吨
五、脱式计算(能简算的要用简便方法计算)(24%)
15.89+(6.75-5.89) 5.17-1.8-3.213.75-(6.48+3.75)
3.68+7.56-2.687.85-(2.34-0.15)35.6-1.8-15.6-7.2
13.35-4.68+2.65-5.3273.8-1.64-13.8-5.36 5.4÷0.15=
2、脱式计算(能简算的要简算)。
0.125×0.25×8×47.4×0.28+0.28×2.6 23.4÷5.85= 4.8×0.9+0.48(4-0.4)×2.5 0.544÷0.025=
2、脱式计算(能简算的要简算)
0.125×320.78×101 3.26×5.7-32.6×0.07 0.25×0.060.125×0.40.64×0.7514.5×0.28 10.32÷212.8÷437.8÷910.32÷2.4 3.25÷2.5 5.46÷1.30.465÷0.150.784÷0.56
65÷5211.2÷0.059÷0.18 1.8÷20
7÷0.567.3÷0.25 0.798÷0.389.8÷1.4
2.52÷2.460÷4.872.8÷0.80.315÷1.5
31÷2513÷200.092÷2372.8÷8
0.315÷0.1596÷64176÷2511.4÷0.24 2. 08÷2636÷4896÷0.647.56÷4.2
1.2×1.4=0.37×8.4= 3.14×
2.8=0.85×1.12
0.86×5.4=0.15×2.34=40÷14=26.37÷31
45.5÷38=1560÷35= 4.8÷2.3= 1.55÷3.9=
7.2÷2.1= 3.87÷7=146.4÷13= 5.63÷6.1
2.84×0.03=0.38×0.13=26.37÷31=32÷42 2.84×0.03= 4.8÷23=0.382×0.13= 4.2÷4.5=
1.64+
2.35=8.65-6.31=28.448÷14=10.88÷34= 0.58×250=12.5+
3.6=10-7.64= 1.86×7= 13.88-6.29=926×0.15=8÷500=100.2-2.28 26.3+7.93=23×7.06=44÷9(精确到百分位)
18÷24=43.68÷26=25.3÷0.88= 124.8÷0.24=
0.1575÷3.15=0.612÷1.8=16.787÷0.28(保留一位小数)
2.36×0.22 2.8×4.58
3.57÷
4.245×2.46
82.8÷36 382.5÷45 6.4×5.48 0.756÷0.36=
0.396÷1.2=27.5÷0.025= 5.08×0.65(得数保留两位小数)9.62÷0.158(得数保留两位小数)14.2÷11(商用循环小数表示)203.5÷11= 25.2÷6= 34.5 ÷15= 5.6÷4= 1.8÷12=
1.8÷12= 7.83÷9= 4.08÷8= 0.54÷6=
6.3÷14= 72÷15= 14.21÷7= 24÷15=
1.26÷18= 43.5÷29= 18.9÷27= 1.35÷15=
28.6÷11= 20.4÷24= 3.64÷52= 15.6÷12= 328÷16= 1.35÷27= 7.65÷0.85= 12.6÷0.28= 62.4÷2.6= 0.544÷0.16= 1.44÷1.8= 11.7÷2.6= 19.4÷12= 5.98÷0.23= 19.76÷5.2= 10.8÷4.5= 21÷1.4= 8.84÷1.7= 6.21÷0.03= 1.89÷0.54= 0.51÷0.22= 7.1÷2.5= 1.998÷0.54= 1.28÷0.16=
2.1÷0.4= 2.56÷
3.2= 50.18÷38.6=
4.68÷7.5=。