题目内容

脱式计算。
(1)4.5-3.2+16.1 (2)95.31-4.28+7.1
(3)21+7.8-6.5 (4)29.25-0.25+17.4
(5)90.4-0.64+90.5 (6)29.1+7.78-0.54
(1)原式=1.3+16.1
                =17.4
(2)原式=91.03+7.1
                =98.13
(3)原式=28.8-6.5
                =22.3
(4)原式=29+17.4
                = 46.4

(5)原式=89.76+90.5
                =180.26

(6)原式=36.88-0.54
                =36.34

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