6．直接写出得数．
0 160428 160436 160442 160446 160452 160454 160458 160464 160466 160472 160478 160482 160484 160488 160494 160496 160502 160506 160508 160512 160514 160518 160520 160522 160523 160524 160526 160527 160528 160530 160532 160536 160538 160542 160544 160548 160554 160556 160562 160566 160568 160572 160578 160584 160586 160592 160596 160598 160604 160608 160614 160622 199269
| 402-78= | 6.25+3.75= | 0.9-0.01= | 2-2÷9= |
| $\frac{2}{3}$×$\frac{3}{10}$= | $\frac{1}{4}$+$\frac{1}{3}$= | $\frac{2}{5}$×4+6×$\frac{2}{5}$= | 8×9×1.25= |