7．直接写得数
0 159556 159564 159570 159574 159580 159582 159586 159592 159594 159600 159606 159610 159612 159616 159622 159624 159630 159634 159636 159640 159642 159646 159648 159650 159651 159652 159654 159655 159656 159658 159660 159664 159666 159670 159672 159676 159682 159684 159690 159694 159696 159700 159706 159712 159714 159720 159724 159726 159732 159736 159742 159750 199269
| 32万+268万= | 3200÷80= | 50×60= |
| 8×7×125= | 421-99= | 400×50= |