8.直接写出得数
$\frac{2}{3}+\frac{1}{2}$= | 712-498= | $\frac{5}{9}÷\frac{1}{5}$= |
0.36÷0.6= | $\frac{2}{3}×0×\frac{3}{5}$= | $\frac{2}{3}×\frac{5}{6}÷\frac{5}{6}×\frac{2}{3}$= |
7.下面图形从正面看到的图形有( )个.
0 157445 157453 157459 157463 157469 157471 157475 157481 157483 157489 157495 157499 157501 157505 157511 157513 157519 157523 157525 157529 157531 157535 157537 157539 157540 157541 157543 157544 157545 157547 157549 157553 157555 157559 157561 157565 157571 157573 157579 157583 157585 157589 157595 157601 157603 157609 157613 157615 157621 157625 157631 157639 199269
A. | 1个 | B. | 2个 | C. | 3个 | D. | 4个 |