199乘97/99简便计算
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199乘97/99简便计算
199 × 97 / 99
= (99 + 100)× 97 / 99
= (99 + 99 + 1)× 97 / 99
= 99 × 97 / 99 + 99 × 97 / 99 + 1 × 97 / 99
= 97 + 97 + 97 / 99
= 194 + 97 / 99
= 194 又 99 分之 97
199乘97/99简便计算
199 × 97 / 99
= (99 + 100)× 97 / 99
= (99 + 99 + 1)× 97 / 99
= 99 × 97 / 99 + 99 × 97 / 99 + 1 × 97 / 99
= 97 + 97 + 97 / 99
= 194 + 97 / 99
= 194 又 99 分之 97