13.直接写出得数.
25%×40%= | 75%÷15%= | 90%×90= |
56÷7% | 20×35%= | 0.6÷3%= |
15÷(1+50%)= | 2000×3.15%= | 0.72÷6%= |
12.在12的后面添上百分号,12就( )
0 160503 160511 160517 160521 160527 160529 160533 160539 160541 160547 160553 160557 160559 160563 160569 160571 160577 160581 160583 160587 160589 160593 160595 160597 160598 160599 160601 160602 160603 160605 160607 160611 160613 160617 160619 160623 160629 160631 160637 160641 160643 160647 160653 160659 160661 160667 160671 160673 160679 160683 160689 160697 199269
A. | 扩大为原来的100倍 | B. | 缩小为原来的$\frac{1}{100}$ | ||
C. | 不变 | D. | 无法确定 |