36×17÷51
25×8+125×4
16×75×125
1248-(1440÷45+29)
32×81+81+81×67
84-84÷[150÷(50-25)].
解:(1)36×17÷51,
=612÷51,
=12;
(2)25×8+125×4,
=200+500,
=700;
(3)16×75×125,
=2×8×75×125,
=(2×75)×(125×8),
=150×1000,
=150000;
(4)1248-(1440÷45+29),
=1248-(32+29)
=1248-61,
=1187;
(5)32×81+81+81×67,
=(32+1+67)×81,
=100×81,
=8100;
(6)84-84÷[150÷(50-25)],
=84-84÷[150÷25],
=84-84÷6,
=84-14,
=70.
分析:(1)从左向右进行计算即可,
(2)先算乘法,再算加法,
(3)把16化成2×8,再运用乘法的交换律、结合律进行计算,
(4)先算小括号里的除法,再算小括号里的加法,最后算括号外的减法,
(5)运用乘法的分配律进行计算,
(6)先算小括号里的减法,再算总括号里的除法,然后算括号外的除法,最后算减法.
点评:此题考查了整数四则混合运算的顺序,能简算的要简算.