简便计算24×0.25×1.25两种办法

Question

简便计算24×0.25×1.25两种办法

Answer 1

24×0.25×1.25
=6×（4×0.25）×1.25
=6×1.25
=7.5

24×0.25×1.25
=（0.25×3）×（8×1.25）
=0.75×10
=4.5

Answer 2

①3×0.25×（8×1.25）=0.75×10=7.5
②6×1.25×（4×0.25）=7.5×1=7.5追问

丅hanks！

Answer 3

24×0.25×1.25
=8×3×0.25×1.25
=（8×1.25）×（3×0.25）
=10×0.75
=7.5本回答被提问者采纳