用递等式计算。
|
| (1)原式= 451+246 =697 | (2)原式=786×3 =2358 | (3)原式=0+998 =998 |
| (4)原式=1080-27 =1053 | (5)原式=517×7 =3619 | (6)原式=510+9 =519 |
| (7)原式=56+702 =758 | (8)原式=214×4 =856 | (9)原式= 464+864 =1328 |
编辑:chaxungu时间:2026-04-27 13:24:18分类:小学数学题库
用递等式计算。
|
| (1)原式= 451+246 =697 | (2)原式=786×3 =2358 | (3)原式=0+998 =998 |
| (4)原式=1080-27 =1053 | (5)原式=517×7 =3619 | (6)原式=510+9 =519 |
| (7)原式=56+702 =758 | (8)原式=214×4 =856 | (9)原式= 464+864 =1328 |