脱式计算. (1)27×14+309 ÷5 (3)872-34×15 (4)225÷3-18 (5) 3.9+2.8-1.4 (6)2.7+
编辑:chaxungu时间:2026-04-27 13:06:53分类:小学数学题库
脱式计算。
| (1)27×14+309 | (2)(609-224)÷5 | (3)872-34×15 | | (4)225÷3-18 | (5) 3.9+2.8-1.4 | (6)2.7+(10.5-3.7) |
|
(1)27×14+309 =378+309 =687 | (2)(609-224)÷5 =385÷5 =77 | (3)872-34×15 =872-510 =362 | (4)225÷3-18 =75-18 =57 | (5) 3.9+2.8-1.4 =6.7-1.4 =5.3 | (6)2.7+(10.5-3.7) =2.7+6.5 =9.5 |
|