5．直接写出得数．
0 154424 154432 154438 154442 154448 154450 154454 154460 154462 154468 154474 154478 154480 154484 154490 154492 154498 154502 154504 154508 154510 154514 154516 154518 154519 154520 154522 154523 154524 154526 154528 154532 154534 154538 154540 154544 154550 154552 154558 154562 154564 154568 154574 154580 154582 154588 154592 154594 154600 154604 154610 154618 199269
| 30÷10= | 120+20= | 260-130= | 55+45= |
| 13×80= | 20×30= | 200-100= | 148-48= |
| 73+27= | 420÷70= | 400÷80= | 600÷5= |