5⼀7×3.2×5.6×0.5等于多少,简便运算?

2025-04-06 16:55:24
推荐回答(1个)
回答1:

5/7×3.2×5.6×0.5
=5/7x(4x0.8)x(7x0.8)x0.5
=5/7x7x4x0.5x0.8x0.8
=5x2x0.8x0.8
=6.4