240+(568-36×13)
82×3+3×18×4
45+240÷4×40
46×(18+282)-3800
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解:
(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.
解析分析:(1)先算减法,再算乘法,最后算加法;
(2)先算乘法,再算加法;
(3)先算除法,再算乘法,最后算加法;
(4)先算加法,再算乘法,最后算减法.
点评:此题主要考查整数的四则混合运算的运算顺序,然后根据运算顺序进行计算.