用简便方法计算0.25乘72点8-2点5×3点28

用简便方法计算0.25乘72点8-2点5×3点28
2025-06-23 18:18:56
推荐回答(1个)
回答1:

0.25×72.8-2.5×3.28
=0.25×72.8-0.25×32.8
=0.25×(72.8-32.8)
=0.25×40
=10