(1)1375-375÷15×18= (2)40.5÷0.81-16×0.24= (3)2/5×25×5/6×4= (4)12×(1/4+1/6+1/3)=

(5)(3/10×5/6+3/10)÷9/4= 能简便运算就简便运算

列式计算
(1)2.63与2.37的和除以0.25,所得的商比25少多少?

(2)1/5与6的倒数之和,除以5/6与3/8的差,商是多少?

一、能简便运算就简便运算。
(1)1375-375÷15×18
=100×18÷15
=120
(2)40.5÷0.81-16×0.24
=50-3.84
=46.16
(3)2/5×25×5/6×4
=(2/5×25)×(5/6×4)
=10×10/3
=100/3
(4)12×(1/4+1/6+1/3)
=12×1/4+12×1/6+12×1/3
=3+2+4
=9
(5)(3/10×5/6+3/10)÷9/4
=(1/4+3/10)÷9/4
=1/4×4/9+3/10×4/9
= 1/9+2/15
=11/45
二、列式计算。
(1)2.63与2.37的和除以0.25,所得的商比25少多少?
25-(2.63+2.37)÷0.25=5
(2)1/5与6的倒数之和,除以5/6与3/8的差,商是多少?
(1/5+1/6)÷(5/6-3/8)= 189/120
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(1)1375-375÷15×18= (2)40.5÷0.81-16×0.24= (3)2\/5×25×5\/6×4...
(1)1375-375÷15×18 =100×18÷15 =120 (2)40.5÷0.81-16×0.24 =50-3.84 =46.16 (3)2\/5×25×5\/6×4 =(2\/5×25)×(5\/6×4)=10×10\/3 =100\/3 (4)12×(1\/4+1\/6+1\/3)=12×1\/4+12×1\/6+12×1\/3 =3+2+4 =9 (5)(3\/10×5\/6+3\/10)...

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