题目内容

脱式计算。(能简算的要简算)
(1)700-108+326 (2)4÷ - ÷4 (3)13.74-(3.74-1.89)
(4)(15+)÷5 (5)÷[×(-)] (6)4.2÷1.5-1.5×0.6
(1)原式=592+326
                =918
(2)原式=5-
                =4
(3)原式=13.74-3.74+1.89
                =10+1.89
                =11.89

(4)原式=15×+×
                =3+
                =3
(5)原式=÷[×]
                =×
                =2
(6)原式=2.8-0.9
                =1.9
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