题目内容
10.用竖式计算下面各题.| 8.4÷6= | 20.8÷8= | 1÷4= | 37÷50= |
| 37.8÷28= | 96÷15= | 0.12×0.205= | 0.04×3.25= |
| 28.7÷35= | 5.46÷42= | 3.64÷14= | 0.74×0.25= |
| 0.112÷16= | 9.8×4.05= | 69.46÷23= | 0.16×1.25= |
分析 根据小数乘除法的竖式的计算方法,直接列竖式计算.
解答 解:
(1)8.4÷6=1.4![]()
(2)20.8÷8=2.6![]()
(3)1÷4=0.25![]()
(4)37÷50=0.74![]()
(5)37.8÷28=1.35![]()
(6)96÷15=6.4![]()
(7)0.12×0.205=0.0246![]()
(8)0.04×3.25=0.13![]()
(9)28.7÷35=0.82![]()
(10)5.46÷42=0.13![]()
(11)3.64÷14=0.26![]()
(12)0.74×0.25=0.185![]()
(13)0.112÷16=0.007![]()
(14)9.8×4.05=39.69![]()
(15)69.46÷23=3.02![]()
(16)0.16×1.25=0.2![]()
点评 本题主要考查了小数乘除法的笔算,根据各自的计算方法解答.
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| 9×7<64 | 7×2<15 | 9×6<60. |
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| 口算: $\frac{5}{9}$×15= | $\frac{3}{5}$×2= | $\frac{1}{4}$×$\frac{4}{5}$= | $\frac{1}{9}$×$\frac{3}{7}$= | $\frac{7}{12}$×$\frac{3}{4}$= | $\frac{15}{17}$×$\frac{17}{15}$= |
| $\frac{5}{6}$×$\frac{2}{15}$= | $\frac{6}{11}$×$\frac{1}{12}$= | $\frac{3}{22}$×$\frac{11}{13}$= | $\frac{7}{6}$×24= |