计算下面各题(能简算的要简算)1.25×3.2×2.5 1.8×5.6+44×0.18 3.4×99+3.4 101×8.3-8.3 (27
计算下面各题(能简算的要简算)1.25×3.2×2.51.8×5.6+44×0.183.4×99+3.4101×8.3-8.3(27÷1.8-11)×2.539.4×[0...
计算下面各题(能简算的要简算)1.25×3.2×2.5 1.8×5.6+44×0.18 3.4×99+3.4 101×8.3-8.3 (27÷1.8-11)×2.5 39.4×[0.96÷(5.4÷0.9)].
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(1)1.25×3.2×2.5, =(1.25×0.8)×(4×2.5), =1×10, =10; (2)1.8×5.6+44×0.18, =1.8×(5.6+4.4), =1.8×10, =18; (3)3.4×99+3.4, =3.4×(99+1), =3.4×100, =340; (4)101×8.3-8.3, =(101-1)×8.3, =100×8.3,悉镇 =830; (5)没谨(27÷1.8-11)×2.5, =(睁察粗15-11)×2.5, =4×2.5, =10; (6)39.4×[0.96÷(5.4÷0.9)], =39.4×[0.96÷6], =39.4×0.16, =6.304. |
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