| 6-3.75= | 0.1×0.99= | 7.5÷0.25= | 1÷ = | × = |
+ = | 2- = | 4.2×0.5= | 6.4-3.25= | 9.3÷0.03= |
44÷ = | ÷2÷ = | 9- - = |
| 6-3.75=2.25, | 0.1×0.99=0.099, | 7.5÷0.25=30, | 1÷ = , | × = , |
+ = , | 2- =1.4, | 4.2×0.5=2.1, | 6.4-3.25=3.15, | 9.3÷0.03=310, |
44÷ =40, | ÷2÷ = , | 9- - =8. |
分析:根据小数和分数加减乘除的计算方法进行计算即可.
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根据连减的性质进行简算.点评:口算时,注意运算符号和数据,然后再进一步计算即可.
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