1.28X8.6+1.44X4.3简便计算怎么算

2025-04-11 11:21:45
推荐回答(4个)
回答1:

1.28×8.6+1.44×4.3
=1.28×2×4.3+1.44×4.3
=4.3×(1.28×2+1.44)
=4.3×(2.56+1.44)
=4.3×4
=17.2

回答2:

8.6(1.28+0.72)=8.6X2=17.2

回答3:

1.28X8.6十1.44x4.3=17.2

回答4:

怎样子简便,到底怎么做?