15.口算或估算
| 270÷3= | 420÷2= | 0÷8= | 149÷5≈ |
| 3600÷9= | 4800÷6= | 126÷4≈ | 809÷9≈ |
14.口算
| 76+25= | 340+60= | 980-70= |
| 500+4000= | 86-27= | 46÷5= |
| 0÷3= | 63-36= | 540-80= |
| 60÷9= | 700-40= | 90-27= |
13.把63千克的大米,平均装在9个袋子里,每个袋子装( )千克.
| A. | 70 | B. | 9 | C. | 7 |
12.一个0也不读的数是( )
| A. | 2090 | B. | 2009 | C. | 2900 |
11.32是8的( )倍?正确列式是( )
| A. | 32-8 | B. | 32÷4 | C. | 32÷8 |
10.爸爸的体重是( )
0 136552 136560 136566 136570 136576 136578 136582 136588 136590 136596 136602 136606 136608 136612 136618 136620 136626 136630 136632 136636 136638 136642 136644 136646 136647 136648 136650 136651 136652 136654 136656 136660 136662 136666 136668 136672 136678 136680 136686 136690 136692 136696 136702 136708 136710 136716 136720 136722 136728 136732 136738 136746 199269
| A. | 75克 | B. | 75千克 | C. | 750克 |