| 脱式计算。 | ||||
|
| (1)50×(180-130)÷20 =50×50÷20 =2500÷20 =125 | (2)960-480÷20×7 =960-24×7 =960-168 =792 |
| (3)170×[680÷(320-286)] =170×(680÷34) =170×20 =3400 | (4)574-(63+77)÷14 =574-140÷14 =574-10 =564 |
编辑:chaxungu时间:2026-04-27 13:23:08分类:小学数学题库
| 脱式计算。 | ||||
|
| (1)50×(180-130)÷20 =50×50÷20 =2500÷20 =125 | (2)960-480÷20×7 =960-24×7 =960-168 =792 |
| (3)170×[680÷(320-286)] =170×(680÷34) =170×20 =3400 | (4)574-(63+77)÷14 =574-140÷14 =574-10 =564 |
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