题目内容

用简便方法计算。
(1)4.35+8.6+15.65+1.4 (2)19.32-5.56-3.44
(3)37.6-(7.6+3.25) (4)5.49+2.68-3.49
(5)6.27+3.83+1.73 (6)8.4+3.5-8.4+3.5
(1)原式= 4.35+15.65+(8.6+1.4)
                =30
(2)原式=19.32-(5.56+3.44)
                =10.32
(3)原式=37.6-7.6-3.25
                =26.75
(4)原式=5.49-3.49+2.68
                = 4.68
(5)原式=6.27+1.73+3.83
                =11.83
(6)原式=8.4-8.4+3.5+3.5
                =7
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