18.用你喜欢的方法计算.
0 157567 157575 157581 157585 157591 157593 157597 157603 157605 157611 157617 157621 157623 157627 157633 157635 157641 157645 157647 157651 157653 157657 157659 157661 157662 157663 157665 157666 157667 157669 157671 157675 157677 157681 157683 157687 157693 157695 157701 157705 157707 157711 157717 157723 157725 157731 157735 157737 157743 157747 157753 157761 199269
| 38.84-(23.84-9.27) | 728×79+272×79 |
| 49.62+27.17-19.62 | 2000÷125÷8 |
| 18吨-9吨40千克+35吨60千克(用小数计算) | 45×27+2680÷67 |
| (253-195)×(72÷6) | 45×[(1470-150)÷40] |