计算下面各题,能简算的要简算,并写出简算过程. (1)179+54+321 (2)13×14×125×2 (3)15.25-3.1
计算下面各题,能简算的要简算,并写出简算过程.(1)179+54+321(2)13×14×125×2(3)15.25-3.1+0.75-4.9(4)115×23-23×1...
计算下面各题,能简算的要简算,并写出简算过程. (1)179+54+321 (2)13×14×125×2 (3)15.25-3.1+0.75-4.9 (4)115×23-23×15 (5)124×5+169÷13 (6)40-(15.3-4.8)
展开
1个回答
展开全部
(1)179+54+321, =179+321+54, =500+54, =554; (2)13×14×125×2, =(13×14)×(125×2), =182×250, =45500; (3)15.25-3.1+0.75-4.9, =(15.25+0.75)-(3.1+4.9), =16-8, =8; (4)115×23-23×15, =(115-15)×23, =100×23, =2300; (5)124×5+169÷13, =620+13, =633; (6)40-(15.3-4.8), =40-10.5, =29.5. |
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