先说说每道题的运算顺序,再计算240+(568-36×13)82×3+3×18×445+240÷4×4046×(18+282)-3800.
(1)240+(568-36×13), =240+(568-468), =240+100, =340; (2)82×3+3×18×4, =246+216, =462; (3)45+240÷4×40, =45+60×40, =45+2400, =2445; (4)46×(18+282)-3800, =46×300-3800, =13800-3800, =10000. |
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