题目内容
10．口算| 1.23÷3= | 1.7×0.4= | 0.36÷12= | 1.6+0.38= | 0.8×11= | 1-0.75= |
| 1.2÷0.3= | 0.75×4= | 15×0.4= | 2.14-0.9= | 4×0.25= | 10÷2.5= |
| 0.4×52= | 1.6×0.4= | 9.6÷6= | 0.6÷0.5= | 0.125×8= | 0.38×1000= |
| 0÷3.5×0.2= | 0×9.7+2.3= | 1.6×9+1.6= | 3.8+1.2= | 4.8÷0.3= | 530+270= |
| 0.51+1.7= | 7.6÷3.8= | 92÷2.3= | 9.6-1.6= | 7.2+2.8= | 2.63+0.37= |
分析 根据小数加减乘除法的计算方法进行解答即可．
解答 解：
| 1.23÷3=0.41 | 1.7×0.4=0.68 | 0.36÷12=0.03 | 1.6+0.38=1.98 | 0.8×11=8.8 | 1-0.75=0.25 |
| 1.2÷0.3=4 | 0.75×4=3 | 15×0.4=6 | 2.14-0.9=1.24 | 4×0.25=1 | 10÷2.5=4 |
| 0.4×52=20.8 | 1.6×0.4=0.64 | 9.6÷6=1.6 | 0.6÷0.5=1.2 | 0.125×8=1 | 0.38×1000=380 |
| 0÷3.5×0.2=0 | 0×9.7+2.3=2.3 | 1.6×9+1.6=16 | 3.8+1.2=5 | 4.8÷0.3=16 | 530+270=800 |
| 0.51+1.7=2.21 | 7.6÷3.8=2 | 92÷2.3=40 | 9.6-1.6=8 | 7.2+2.8=10 | 2.63+0.37=3 |
点评 此题考查了小数加减乘除法的口算能力．
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