脱式计算.(能简算的用简算)(1)25×4.4(2)7.7×0.16÷7.7×12.5 (3)10.64÷(3.7-2.9)(4)4.8
脱式计算.(能简算的用简算)(1)25×4.4(2)7.7×0.16÷7.7×12.5(3)10.64÷(3.7-2.9)(4)4.8×99+4.8(5)47.3+21×...
脱式计算.(能简算的用简算)(1)25×4.4(2)7.7×0.16÷7.7×12.5 (3)10.64÷(3.7-2.9)(4)4.8×99+4.8 (5)47.3+21×(3.9-0.87)(6)5×[(68.41-32.17)÷0.4].
展开
1个回答
展开全部
(1)25×4.4, =25×4+25×0.4, =100+10, =110; (2)7.7×0.16÷7.7×12.5, =7.7÷7.7×0.8×0.2×12.5, =1×0.2×12.5×0.8, =0.2×10, =2; (3)10.64÷(3.7-2.9), =10.64÷0.8, =13.3; (4)4.8×99+4.8, =4.8×(99+1), =4.8×100, =480; (5)47.3+21×(3.9-0.87), =47.3+21×3.03, =47.3+63.63, =110.93; (6)5×[(68.41-32.17)÷0.4], =5×(36.24÷0.4) =5×90.6, =453. |
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询