| 345+233= | 45×11= | 527-398= | 235-47-53= |
| 0.78+1.32= |  = | 2.56+1.4= | 1.9×4×0.5= |
| 3.67÷100= | 3.25×1000= | 0.125×0.8= | 3.6+2.8+6.4= |
| 6.08×304≈ | 4838÷61≈ | 15-2.55= |  = |
 = |  = |  = |  = |
| 345+233= | 45×11= | 527-398= | 235-47-53= |
| 0.78+1.32= | = | 2.56+1.4= | 1.9×4×0.5= |
| 3.67÷100= | 3.25×1000= | 0.125×0.8= | 3.6+2.8+6.4= |
| 6.08×304≈ | 4838÷61≈ | 15-2.55= | = |
| = | = | = | = |
有3个角．
如图是一个圆，请你画出圆的一条直径和圆心，简单说出找直径的方法．
=
，则x与y成________比例；如果y=2x+0.5x，则x与y成________比例．（x、y均不为零）
，光明牛奶的箱数比伊利牛奶多20%，三种牛奶各有多少箱？