题目内容

脱式计算,能简算的要简算。
(1)99×0.1÷30 (2)4.3-(0.6+2.4÷0.8)
(3)0.18×4×0.5 (4)7.5×0.12+0.88×7.5
(1)原式=(100×0.1-0.1)÷30
                =9.9÷30
                =0.33
(2)原式=4.3-(0.6+3)
                =4.3-3.6
                =0.7
(3)原式=0.18×(4×0.5)
                =0.18×2
                =0.36
(4)原式=7.5×(0.12+0.88)
                =7.5×1
                =7.5
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