题目内容
脱式计算.
(550-450)÷5+185
(176×32-5038)÷6
786÷6+136×5
1500-(24×45+96)
(550-450)÷5+185
(176×32-5038)÷6
786÷6+136×5
1500-(24×45+96)
分析:(1)先算减法,再算除法,最后算加法;
(2)先算乘法,再算减法,最后算除法;
(3)先算除法和乘法,再算加法;
(4)先算乘法,再算加法,最后算减法.
(2)先算乘法,再算减法,最后算除法;
(3)先算除法和乘法,再算加法;
(4)先算乘法,再算加法,最后算减法.
解答:解:
(1)(550-450)÷5+185,
=100÷5+185,
=20+185,
=205;
(2)(176×32-5038)÷6,
=(5632-5038)÷6,
=594÷6,
=99;
(3)786÷6+136×5,
=131+680,
=811;
(4)1500-(24×45+96),
=1500-(1080+96),
=1500-1176,
=324.
(1)(550-450)÷5+185,
=100÷5+185,
=20+185,
=205;
(2)(176×32-5038)÷6,
=(5632-5038)÷6,
=594÷6,
=99;
(3)786÷6+136×5,
=131+680,
=811;
(4)1500-(24×45+96),
=1500-(1080+96),
=1500-1176,
=324.
点评:此题主要考查整数的四则混合运算的运算顺序,根据运算顺序进一步计算.
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