题目内容
| 能简便的用简便方法计算。 | ||||||
|
| (1)9.27-4.69+1.54 =4.58+1.54 =6.12 |
(2)15.07-(8.34+2.69) =15.07-11.03 =4.04 |
(3)25.94+36.87+13.13+24.06 =50+50 =100 |
| (4)69.24-21.57-17.43 =69.24-39 =30.24 |
(5)77.2-(32.46-18.8) =96-32.46 =63.54 |
(6)66.86-(8.66-1.34) =6.82-8.66 =59.54 |
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