问题 计算题
计算下面各题,能简算的要简算。
(1)6.75-2.9-3.1(2)125×(860+240÷12)
(3)23.61+5.7-3.61(4)45×37+73×45-10×45
答案

(1)原式=6.75-(2.9+3.1)

                =6.75-6

                =0.75(2)原式=125×(860+20)

                =125×8×110

                =110000

(3)原式=23.61-3.61+5.7

                =20+5.7

                =25.7(4)原式= 45×(37+73-10)

                = 45×100

                = 4500

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