问题 计算题
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
答案

(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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