9.一个因数末尾有1个0,另一个因数末尾有2个0,那么积的末尾有一共有( )个0.
| A. | 2 | B. | 3 | C. | 至少3个 | D. | 无法判断 |
8.在除法算式1190÷42=28…14中,下列验算方法错误的是( )
0 137466 137474 137480 137484 137490 137492 137496 137502 137504 137510 137516 137520 137522 137526 137532 137534 137540 137544 137546 137550 137552 137556 137558 137560 137561 137562 137564 137565 137566 137568 137570 137574 137576 137580 137582 137586 137592 137594 137600 137604 137606 137610 137616 137622 137624 137630 137634 137636 137642 137646 137652 137660 199269
| A. | 28×42+14 | B. | (1190+14)÷28 | C. | 1190-42×28 | D. | (1190-14)÷28 |