题目内容
按照指定的步数计算下面各题.
275×(78-50)
=
=
(234-14)÷11
=
=
864÷[(27-23)×12]
=
=
=
275×(78-50)
=
=
(234-14)÷11
=
=
864÷[(27-23)×12]
=
=
=
分析:(1)先算减法,再算乘法;
(2)先算减法,再算除法;
(3)先算减法,再算乘法,最后算除法.
(2)先算减法,再算除法;
(3)先算减法,再算乘法,最后算除法.
解答:解:
(1)275×(78-50),
=275×28,
=7700;
(2)(234-14)÷11,
=220÷11,
=20;
(3)864÷[(27-23)×12],
=864÷[4×12],
=864÷48,
=18.
(1)275×(78-50),
=275×28,
=7700;
(2)(234-14)÷11,
=220÷11,
=20;
(3)864÷[(27-23)×12],
=864÷[4×12],
=864÷48,
=18.
点评:此题主要考查整数的四则混合运算的运算顺序,然后再进一步计算.
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