11．计算
| 700×30= | 3500÷7= | 32×30= | 297÷3≈ | 92×61≈ |
| 3000÷5= | 60×50= | 0÷7= | 409÷8≈ | 28×68≈ |
6．填表
0 158614 158622 158628 158632 158638 158640 158644 158650 158652 158658 158664 158668 158670 158674 158680 158682 158688 158692 158694 158698 158700 158704 158706 158708 158709 158710 158712 158713 158714 158716 158718 158722 158724 158728 158730 158734 158740 158742 158748 158752 158754 158758 158764 158770 158772 158778 158782 158784 158790 158794 158800 158808 199269
| × | 100 | 125 | 150 | 175 | 200 | 225 | 250 | 275 |
| 5 |