灵活计算.
| ( | 12.5×0.32×25. |
解方程.
| x-25%x=36 | 2x+120%×5=16 | (1-45%)x=16.5. |
列竖式计算并验算.
| 846+395=验算: | 507-96=验算: | 404-186=验算: | 755+165=验算: |
| 58÷8= | 59÷6= | 68÷7= | 64÷9= |
直接写出得数.
| 479+321= | 4-0.78= | 8÷0.01= | 8×37.5%= | ( |
| 1- | 1.25×0.16×8= |
求未知数X.
| (1) | (2) | (3)40:x=2.5:15. |
| ( | 12.5×0.32×25. |
| x-25%x=36 | 2x+120%×5=16 | (1-45%)x=16.5. |
| 846+395=验算: | 507-96=验算: | 404-186=验算: | 755+165=验算: |
| 58÷8= | 59÷6= | 68÷7= | 64÷9= |
| 479+321= | 4-0.78= | 8÷0.01= | 8×37.5%= | ( |
| 1- | 1.25×0.16×8= |
| (1) | (2) | (3)40:x=2.5:15. |