题目内容

怎样简便就怎样算。
(1)6.3+10.5+0.7 (2)50.5-6.64-3.36
(3)8.36+(9.7-2.36) (4)2.8+3.05+2.2+0.95
(5)9.15-(1.15-0.98) (6)18.7-(2.7+0.98)
(7)6.34-0.18-1.82+6.66 (8)3.789+1.27-3.789+0.73
(1)原式=6.3+0.7+10.5
                =17.5
(2)原式=50.5-(6.64+3.36)
                = 40.5
(3)原式=8.36-2.36+9.7
                =15.7
(4)原式=2.8+2.2+(3.05+0.95)
                =9
(5)原式=9.15-1.15+0.98
                =8.98
(6)原式=18.7-2.7-0.98
                =15.02
(7)原式=6.34+6.66-(0.18+1.82)
                =11
(8)原式=3.789-3.789+(1.27+0.73)
                =2
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