问题 计算题
脱式计算。(能简算的要简算)
(1)(30-19.8)×0.6+31.2=(2) [10-(6+ 3.03)]×1.01=(3) 73.6×27+73.6×73=
(4)49.2-0.5×0.5-8.75 =(5)(291-38 ×3.5 -35.5)÷3.5=(6)12.5×0.56×0.4×0.8×250=
答案

(1)原式=10.2×0.6+31.2

                       =(10+0.2)×0.6+31.2

                       =37.32(2)原式=0.97×1.01

                       =0.9797

(3)原式=73.6×(27+73)

                =73.6×100

                =7360

(4)原式=49.2-0.25-8.75

                      =49.2-(0.25+8.75)

                      =40.2(5)原式=255.5÷3.5-38

                       =73-38

                       =35(6)原式=10(0.4×250)×0.56

                =560

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