问题 计算题
简算。
(1)432+783+568+117(2)365-178-122
(3)64×125(4)12×37+12×62+12
(5)3000÷125÷8(6)720×31÷72
答案

(1)原式=(432+568)+(783+117)

                =1000+900

                =1900

(2)原式=365-(178+122)

                =365-300

                =65

(3)原式=8×(8×125)

                =8×1000

                =8000(4)原式=12×(37+62+1)

                =12×100

                =1200

(5)原式=3000÷(125×8)

                =3000÷1000

                =3(6)原式=720÷72×31

                =10×31

                =310

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