题目内容
先说说下面各题的运算顺序,再用递等式进行计算.
(1)462÷3+66÷22
(2)66-462÷22÷3
(3)947+164×60÷82
(4)993-2604÷14+549.
(1)462÷3+66÷22
(2)66-462÷22÷3
(3)947+164×60÷82
(4)993-2604÷14+549.
分析:(1)先求出两个除法算式的商,再相加即可;
(2)先算除法,再算减法;
(3)先算乘法,再算除法,最后算加法;
(4)先算除法,再从左向右进行计算即可.
(2)先算除法,再算减法;
(3)先算乘法,再算除法,最后算加法;
(4)先算除法,再从左向右进行计算即可.
解答:解:(1)462÷3+66÷22,
=154+3,
=157;
(2)66-462÷22÷3,
=66-21÷3,
=66-7,
=59;
(3)947+164×60÷82,
=947+9840÷82,
=947+120,
=1067;
(4)993-2604÷14+549,
=993-186+549,
=807+549,
=1356.
=154+3,
=157;
(2)66-462÷22÷3,
=66-21÷3,
=66-7,
=59;
(3)947+164×60÷82,
=947+9840÷82,
=947+120,
=1067;
(4)993-2604÷14+549,
=993-186+549,
=807+549,
=1356.
点评:此题主要考查整数的四则混合运算的运算顺序以及计算能力.
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