用简便方法计算。
|
| (1)原式=7.2+2.8+5.9 =10+5.9 =15.9 | (2)原式=16.98-6.98-5.89 =10-5.89 = 4.11 | (3)原式=37.8-9.8+4.56 =28+4.56 =32.56 |
编辑:chaxungu时间:2026-04-27 13:09:57分类:小学数学题库
用简便方法计算。
|
| (1)原式=7.2+2.8+5.9 =10+5.9 =15.9 | (2)原式=16.98-6.98-5.89 =10-5.89 = 4.11 | (3)原式=37.8-9.8+4.56 =28+4.56 =32.56 |