5.2*3.7 10.4*2.1 0.52*21怎么简便算法

2025-02-26 00:56:46
推荐回答(3个)
回答1:

怎么简便算法
5.2×3.7+10.4×2.1+0.52×21
=5.2×3.7+5.2×4.2+5.2×2.1
=5.2×(3.7+4.2+2.1)
=5.2×10
=52

回答2:

5.2*3.7+10.4*2.1+0.52*21
=5.2*(3.7+2*2.1+2.1)
=5.2*10
=52

回答3:

5.2×3.7+10.4×2.1+0.52×21
=5.2×3.7+5.2×2×2.1+5.2×2.1
=5.2×(3.7+4.2+2.1)
=5.2×10
=52