Question

1.6x7.5x1.25的简便算法是什么？

Answer 1

1.6x7.5x1.25
=（0.8x2）x7.5x1.25
=（0.8x1.25）x（2x7.5）
=1x15
=15

Answer 2

1.6×7.5×1.25
=0.8×2×7.5×1.25
=（0.8×1.25）×（2×7.5）
=1×15
=15