| 先想好运算顺序,再计算。 | ||||
|
| (1)620+(401-438÷73) =620+(401-6) =1015 | (2)460×(82-720÷9) =460×2 =920 |
| (3)350-(350-350÷70) =350-345 =5 | (4)580-(120×25-2991) =580-9 =571 |
编辑:chaxungu时间:2026-04-27 13:22:04分类:小学数学题库
| 先想好运算顺序,再计算。 | ||||
|
| (1)620+(401-438÷73) =620+(401-6) =1015 | (2)460×(82-720÷9) =460×2 =920 |
| (3)350-(350-350÷70) =350-345 =5 | (4)580-(120×25-2991) =580-9 =571 |