问题 计算题
能简便的用简便方法计算。
(1)9.27-4.69+1.54(2)15.07-(8.34+2.69)(3)25.94+36.87+13.13+24.06
(4)69.24-21.57-17.43(5)77.2-(32.46-18.8)(6)66.86-(8.66-1.34)
答案

(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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