问题描述:
1.25x1.6x0.9简便计算
最佳答案:
解法一:
1.25x1.6x0.9
=1.25x8x0.2x0.9
=10x0.2x0.9
=2x0.9
=1.8
解法二:
1.6×1.25x0.9
=4×0.4×1.25x0.9
=4×0.4×0.25×5x0.9
=20x0.1x0.9
=2x0.9
=1.8
1.25x1.6x0.9简便计算。
问题描述:
1.25x1.6x0.9简便计算
解法一:
1.25x1.6x0.9
=1.25x8x0.2x0.9
=10x0.2x0.9
=2x0.9
=1.8
解法二:
1.6×1.25x0.9
=4×0.4×1.25x0.9
=4×0.4×0.25×5x0.9
=20x0.1x0.9
=2x0.9
=1.8