16．直接写得数．
0 159494 159502 159508 159512 159518 159520 159524 159530 159532 159538 159544 159548 159550 159554 159560 159562 159568 159572 159574 159578 159580 159584 159586 159588 159589 159590 159592 159593 159594 159596 159598 159602 159604 159608 159610 159614 159620 159622 159628 159632 159634 159638 159644 159650 159652 159658 159662 159664 159670 159674 159680 159688 199269
| 0.63÷0.9= | 6+$\frac{3}{5}$= | $\frac{2}{5}$÷$\frac{4}{25}$= | 0.77+0.33= | 4-1.5= |
| 73×193×0= | 2011×0.25×4= | 1-$\frac{2}{5}$÷1-$\frac{2}{5}$= | 3×$\frac{2}{5}$+$\frac{3}{5}$= | 12×（$\frac{1}{4}$+$\frac{1}{6}$）= |