脱式计算,能简算的要简算。
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| (1)原式=200-108+189 =281 | (2)原式=90-28 =62 | (3)原式=80×14 =1120 |
| (4)原式=298+102+85 =485 | (5)原式=436-(37+63) =336 | (6)原式=250×4×9 =9000 |
| (7)原式=45×18÷90 =810÷90 =9 | (8)原式=137×(99+1) =13700 | (9)原式=23×(100+2) =2300+46 =2346 |
编辑:chaxungu时间:2026-04-27 13:25:44分类:小学数学题库
脱式计算,能简算的要简算。
|
| (1)原式=200-108+189 =281 | (2)原式=90-28 =62 | (3)原式=80×14 =1120 |
| (4)原式=298+102+85 =485 | (5)原式=436-(37+63) =336 | (6)原式=250×4×9 =9000 |
| (7)原式=45×18÷90 =810÷90 =9 | (8)原式=137×(99+1) =13700 | (9)原式=23×(100+2) =2300+46 =2346 |