Question

10x2.5x4.3的简便计算

Answer 1

简便计算是先算10x2.5
原式=10x2.5x4.3
=25x4.3
=20x4.3+5x4.3
=86+21.5
=107.5

Answer 2

解:先计算10ⅹ2.5，然后运用拆分法将4.3分解为(4+0.3)分别与10ⅹ2.5的积相乘，最后相加。计算过程
10ⅹ2.5x4.3
=25ⅹ(4+0.3)
=100+7.5
=107.5。