五年级乘除竖式计算
1、小数乘法怎样计算?
1.先按照整数乘法算出积,再点小数点。
2.点小数点时,看因数中一共有几位小数,就从积的最右边起数出几位,点上小数点。
2、小数乘法竖式计算
(1)乘得的积小数位数不够:
注:要在前面用0补足,再点小数点。
(2)乘积末尾有0的情况:
注:要在前面先用0补足,再点小数点,最后去掉末尾的0。
附练习题
3.5×3= 0.72×5=
2.05×1.4= 12.4×6.7=
2.3×12= 6.7×0.39=
2.44×6.2= 0.56×0.04=
6.7×0.3= 0.56×0.04=
3.7×4.6= 0.29×0.07=
6.5×8.4= 56×1.3=
3.2×2.5= 2.6×1.08=
0.87×7= 3.5×16=
12.5×42= 1.8×23=
0.37×0.4= 1.06×25=
7×8.06= 0.6×0.39=
27×0.43= 1.7×0.45=
1.23×1.4= 0.37×8.4=
0.86×1.2= 2.34×0.15=
21×2.84= 4.32×8=
6.8×25= 2.58×3=
58×1.6= 36×2.4=
2.56×3.7= 1.56×0.08=
1.03×5.3= 0.208×2.5=
1.12×1.1= 0.326×1.3=
6.5×6.5= 3.3×2.6=
0.98×5.5= 2.1×2.15=
5.2×2.9= 0.48×8.1=
26.4×0.063= 0.15×0.65=
26.87×0.063= 0.15×0.5=
1.11×0.77= 1.65×0.08=
103×0.53= 0.208×77=
1.12×1.12= 0.5642×1.3=
6.6×6.5= 39×2.6=
1.56×5.5= 6.4×2.15=
5.2×9.9= 0.49×8.1=
25.2÷6= 34.5 ÷1.5=
5.6÷0.04= 1.8÷12=
1.8÷1.2= 7.83÷9=
4.08÷0.8= 0.54÷0.6=
6.3÷0.14= 72÷15=
14.21÷7= 24÷1.5=
1.26÷18= 43.5÷29=
18.9÷0.27= 1.35÷15=
28.6÷11= 20.4÷24=
3.64÷52= 156÷0.12=
328÷1.6= 1.35÷27=
7.65÷0.85= 12.6÷0.28=
62.4÷2.6= 54.4÷0.16=
1.44÷1.8= 11.7÷2.6=
19.4÷12= 59.8÷0.23=
19.76÷5.2= 10.8÷45=
21÷1.4= 8.84÷1.7=
62.1÷0.03= 1.89÷54=
0.51÷2.2= 7.1÷2.5=
1.998÷0.54= 1.28÷16=