| 脱式计算,能简算的要简算。 | ||||
|
| (1)70.8-7.25-1.75 =70.8-9 =61.8 | (2)5.81+8.3+4.19+11.7 =10+20 =30 |
| (3)0.05×0.4×20×1.7 =1×0.4×1.7 =0.68 | (4)4.87×2.34+4.87×7.66 =4.87×10 =48.7 |
编辑:chaxungu时间:2026-04-27 13:34:00分类:小学数学题库
| 脱式计算,能简算的要简算。 | ||||
|
| (1)70.8-7.25-1.75 =70.8-9 =61.8 | (2)5.81+8.3+4.19+11.7 =10+20 =30 |
| (3)0.05×0.4×20×1.7 =1×0.4×1.7 =0.68 | (4)4.87×2.34+4.87×7.66 =4.87×10 =48.7 |