1.口算.
96÷12= | 320÷4= | 480÷80= | 90÷6= |
300÷60= | 4×19= | 13×40= | 64÷4= |
19.学校食堂买了8套不锈钢碗,每套里装9只,共花去216元钱,( )式子可用于计算每只碗多少元钱?
A. | 216÷9×8 | B. | 216÷8×9 | C. | 216÷(9×8) |
15.直接写出得数.
0 158449 158457 158463 158467 158473 158475 158479 158485 158487 158493 158499 158503 158505 158509 158515 158517 158523 158527 158529 158533 158535 158539 158541 158543 158544 158545 158547 158548 158549 158551 158553 158557 158559 158563 158565 158569 158575 158577 158583 158587 158589 158593 158599 158605 158607 158613 158617 158619 158625 158629 158635 158643 199269
$\frac{1}{2}$÷$\frac{2}{3}$= | $\frac{3}{5}$×$\frac{2}{3}$= | $\frac{8}{9}$×4= | 0.5-$\frac{1}{4}$= | 9÷30%= |
12÷$\frac{3}{4}$= | 1÷$\frac{5}{3}$= | $\frac{1}{4}$+$\frac{1}{3}$= | $\frac{12}{58}$×$\frac{29}{36}$= | $\frac{12}{58}$×$\frac{29}{36}$= |