计算下面各题,能简算的要简算。
|
| (1)原式=254×(99+1) =254×100 =25400 | (2)原式=7824-(275-54) =7824-221 =7603 |
| (3)原式=864-300+1 =564+1 =565 | (4)原式=2700-(425+175) =2700-600 =2100 |
| (5)原式=5000-(720+210)÷31 =5000-930÷31 =5000-30 = 4970 |
编辑:chaxungu时间:2026-04-27 13:24:26分类:小学数学题库
计算下面各题,能简算的要简算。
|
| (1)原式=254×(99+1) =254×100 =25400 | (2)原式=7824-(275-54) =7824-221 =7603 |
| (3)原式=864-300+1 =564+1 =565 | (4)原式=2700-(425+175) =2700-600 =2100 |
| (5)原式=5000-(720+210)÷31 =5000-930÷31 =5000-30 = 4970 |