5.4×3.2+7.6×2.4可有简便算法?

2025-02-03 05:39:08
推荐回答(3个)
回答1:

简便算法如下:
5.4×3.2+7.6×2.4
=5.4×3.2+(4.6+3)×2.4
=5.4×3.2+4.6×2.4+3×2.4
=5.4×(2.4+0.8)+4.6×2.4+3×2.4
=5.4×2.4+5.4×0.8+4.6×2.4+3×2.4
=(5.4+4.6)×2.4+5.4×0.8+3×2.4
=24+11.52
=35.52

回答2:

5.4×3.2+7.6×2.4
=5.4×0.4×8+7.6×0.3×8
=2.16×8+2.28×8
=(2.16+2.28)×8
=4.44×8
=35.52

回答3:

5.4×3.2 + 7.6×2.4
=1.8x3x3.2 + 1.9x4x2.4
=1.8x9.6 + 1.9x9.6
【提取公因数9.6】
=9.6x(1.8+1.9)
=9.6x3.7
=(10-0.4)x3.7
=37-1.48
=35.52