计算下面各题,能算简的必须简算.4.75+3.25×2.4+7.6 (18.4+27.83÷4.6)×0.2 11×4.9-4.9 1.65
计算下面各题,能算简的必须简算.4.75+3.25×2.4+7.6(18.4+27.83÷4.6)×0.211×4.9-4.91.65×4.3+8.35×4.35.25÷...
计算下面各题,能算简的必须简算.4.75+3.25×2.4+7.6 (18.4+27.83÷4.6)×0.2 11×4.9-4.9 1.65×4.3+8.35×4.3 5.25÷[(1.2+0.05)×1.4] 1.7÷2.5÷0.4.
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(1)4.75+3.25×2.4+7.6, =4.75+7.8+7.6, =20.15; (2)(18.4+27.83÷4.6)×0.2, =(18.4+6.05)×0.2, =24.45×0.2, =4.89; (3)11×4.9-4.9, =4.9×(11-1), =4.9×10, =49; (4)1.65×4.3+8.35×4.3, =4.3×(1.65+8.35) =4.3×10, =43; (5)5.25÷[(1.2+0.05)×1.4], =5.25÷(1.25×1.4), =5.25÷1.75, =3; (6)1.7÷2.5÷0.4, =1.7÷(2.5×0.4), =1.7÷1, =1.7. |
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