题目内容
计算下面各题
14×18+520 | 546-9×34 | 96×(325-295) |
100-568÷8 | 22+147÷49 | 380÷(49-30) |
分析:(1)先算乘法,再算加法;
(2)先算乘法,再算减法;
(3)先算小括号里面的减法,再算括号外的乘法;
(4)先算除法,再算减法;
(5)先算除法,再算加法;
(6)先算小括号里面的减法,再算括号外的除法.
(2)先算乘法,再算减法;
(3)先算小括号里面的减法,再算括号外的乘法;
(4)先算除法,再算减法;
(5)先算除法,再算加法;
(6)先算小括号里面的减法,再算括号外的除法.
解答:解:(1)14×18+520,
=252+520,
=772;
(2)546-9×34,
=546-306,
=240;
(3)96×(325-295),
=96×30,
=2880;
(4)100-568÷8,
=100-71,
=29;
(5)22+147÷49,
=22+3,
=25;
(6)380÷(49-30),
=380÷19,
=20.
=252+520,
=772;
(2)546-9×34,
=546-306,
=240;
(3)96×(325-295),
=96×30,
=2880;
(4)100-568÷8,
=100-71,
=29;
(5)22+147÷49,
=22+3,
=25;
(6)380÷(49-30),
=380÷19,
=20.
点评:解决本题关键是理清楚运算的顺序,根据运算顺序逐步求解即可.
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