一、脱式计算。(能简便的要简便) (0.2+6.37÷0.7)×0.5

2025-04-07 17:57:35
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回答(1):

(0.2+6.37÷0.7)×0.5
=0.2×0.5+6.37÷0.7×0.5
=0.1+9.1×0.5
=0.1+4.55
=4.65
5.7×2.9+4.3×2.9
=(5.7+4.3) ×2.9
=10×2.9
=29
1.6×1.25×2.5
=2×2.5
=5
10.1×4.8
=(10+0.1)×4.8
=10×4.8+0.1×4.8
=48+0.48
=48.48