| 2.25×4= | 1.01-0.91= | 1÷0.01= | ÷ = | ÷5.25= |
+6.25= | 0.74×100= | 742+258= | 7× ÷7× = | 10-3.2-5.8= |
| 2.25×4=9, | 1.01-0.91=0.1, | 1÷0.01=100, | ÷ = , | ÷5.25=1, |
+6.25=7, | 0.74×100=74, | 742+258=1000, | 7× ÷7× = , | 10-3.2-5.8=1. |
分析:根据小数和分数加减乘除的计算方法进行计算即可.
点评:口算时,注意运算符号和数据,然后再进一步计算即可.
÷
=
÷5.25=
+6.25=
÷7×
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