2.5x0.6-1.8x0.5用简便运算

2025-03-04 07:50:23
推荐回答(3个)
回答1:

2.5×0.6-1.8×0.5=2.5×0.6-0.6×3×0.5=0.6×(2.5-3×0.5)=0.6×1=0.6

回答2:

原式=0.15x(5x2-6)
=0.15x4
=0.6

回答3:

2.5×0.6-1.8×0.5
=2.5×0.6-0.6×3×0.5
=0.6×(2.5-3×0.5)
=0.6×1
=0.6