计算下面各题
|
| (1)350÷7+24×3, =50+72, =122; (2)618-80÷2×5, =618-40×5, =618-200, =418; (3)243+65+(57+135), =(243+57)+(65+135), =300+200, =500; (4)15×(41-17)÷30, =15×24÷30, =360÷30, =12; (5)45÷[210÷(35×2)], =45÷[210÷70], =45÷3, =15; (6)25×(9×4)×3, =(25×4)×(9×3), =100×27, =2700. |
关注公众号回复:奥数答案
即可免费获得密码查看答案
