4．看谁算的又对又快
0 159516 159524 159530 159534 159540 159542 159546 159552 159554 159560 159566 159570 159572 159576 159582 159584 159590 159594 159596 159600 159602 159606 159608 159610 159611 159612 159614 159615 159616 159618 159620 159624 159626 159630 159632 159636 159642 159644 159650 159654 159656 159660 159666 159672 159674 159680 159684 159686 159692 159696 159702 159710 199269
| $\frac{5}{12}$÷5= | 0×$\frac{3}{10}$= | $\frac{7}{4}$×8= | $\frac{3}{10}$÷$\frac{9}{20}$= |
| $\frac{4}{5}$×$\frac{4}{5}$= | $\frac{8}{15}$×$\frac{5}{6}$= | 3÷$\frac{27}{8}$= | 1÷$\frac{3}{7}$= |