题目内容

脱式计算:
21×5+30=
96÷6+78÷6= 11×6+55÷5= 1008÷8+120×4=
1041-(41+328)= 2136÷3-48×5= 635×4-540×3= 32×4+76-52=
2763÷(210-201)=
分析:(1)先算乘法,再算加法;
(2)同时运算两个除法,再算加法;
(3)(4)(6)先同时计算乘法和除法,再算加法;
(5)根据减法的性质简算;
(7)先同时运算两个乘法,再算减法;
(8)先算乘法,再算加法,最后算减法;
(9)先算小括号里面的减法,再算括号外的除法.
解答:解:(1)21×5+30,
=105+30,
=135;

(2)96÷6+78÷6,
=16+13,
=28;

(3)11×6+55÷5,
=66+11,
=77;

(4)1008÷8+120×4,
=126+480,
=606;

(5)1041-(41+328),
=1041-41-328,
=1000-328,
=672;

(6)2136÷3-48×5,
=712-240,
=472;

(7)635×4-540×3,
=2540-1620,
=920;

(8)32×4+76-52,
=128+76-52,
=204-52,
=152;

(9)2763÷(210-201),
=2763÷9,
=307.
点评:本题考查了简单的四则混合运算,计算时先理清楚运算顺序,根据运算顺序逐步求解即可.
练习册系列答案
相关题目

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网