解:7.3×0.53+2.7×0.53等于( 53/10 ),【即等于5.3】
∵已知需求出7.3×0.53+2.7×0.53等于多少
A × B + A × C = A × (B + C)
∴7.3 × 0.53 + 2.7 × 0.53
= 0.53 × (7.3 + 2.7)
= 53/100 × 10
= 53/10
= 5.3
答:7.3×0.53+2.7×0.53等于53/10,【即等于5.3】
根据乘法分配律来算简便。
7.3×0.53+2.7×0.53
=(7.3+2.7)×0.53
=10×0.53
=5.3
简便运算过程
=0.53*【7.3+2.7】
=0.53*10
=5.3
请理解以上解答问题的过程