7.7×0.16÷7.7×12.5=?用简便方法计算

2025-02-26 00:41:53
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回答1:

7.7×0.16÷7.7×12.5=0.16×12.5=8×0.02×12.5=8×12.5×0.02=100×0.02=2注:0.16乘以7.7又除以7.7,所以两个7.7抵消掉