简单几道算术题.能简便尽量简便.1/5÷18/25-(减)5/24÷5/6(60%+4/9×50%)÷37/60-(减)5/6(40%+1/3)÷2/3×(1-(减)75%)列式计算.一个数是600,比另一个数多20%.求另一个数.(列方程)
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![简单几道算术题.能简便尽量简便.1/5÷18/25-(减)5/24÷5/6(60%+4/9×50%)÷37/60-(减)5/6(40%+1/3)÷2/3×(1-(减)75%)列式计算.一个数是600,比另一个数多20%.求另一个数.(列方程)](/uploads/image/z/1067312-56-2.jpg?t=%E7%AE%80%E5%8D%95%E5%87%A0%E9%81%93%E7%AE%97%E6%9C%AF%E9%A2%98.%E8%83%BD%E7%AE%80%E4%BE%BF%E5%B0%BD%E9%87%8F%E7%AE%80%E4%BE%BF.1%2F5%C3%B718%2F25-%EF%BC%88%E5%87%8F%EF%BC%895%2F24%C3%B75%2F6%EF%BC%8860%EF%BC%85%EF%BC%8B4%2F9%C3%9750%EF%BC%85%EF%BC%89%C3%B737%2F60-%EF%BC%88%E5%87%8F%EF%BC%895%2F6%EF%BC%8840%EF%BC%85%EF%BC%8B1%2F3%EF%BC%89%C3%B72%2F3%C3%97%EF%BC%881-%EF%BC%88%E5%87%8F%EF%BC%8975%EF%BC%85%EF%BC%89%E5%88%97%E5%BC%8F%E8%AE%A1%E7%AE%97.%E4%B8%80%E4%B8%AA%E6%95%B0%E6%98%AF600%2C%E6%AF%94%E5%8F%A6%E4%B8%80%E4%B8%AA%E6%95%B0%E5%A4%9A20%EF%BC%85.%E6%B1%82%E5%8F%A6%E4%B8%80%E4%B8%AA%E6%95%B0.%EF%BC%88%E5%88%97%E6%96%B9%E7%A8%8B%EF%BC%89)
简单几道算术题.能简便尽量简便.1/5÷18/25-(减)5/24÷5/6(60%+4/9×50%)÷37/60-(减)5/6(40%+1/3)÷2/3×(1-(减)75%)列式计算.一个数是600,比另一个数多20%.求另一个数.(列方程)
简单几道算术题.
能简便尽量简便.
1/5÷18/25-(减)5/24÷5/6
(60%+4/9×50%)÷37/60-(减)5/6
(40%+1/3)÷2/3×(1-(减)75%)
列式计算.
一个数是600,比另一个数多20%.求另一个数.(列方程)
简单几道算术题.能简便尽量简便.1/5÷18/25-(减)5/24÷5/6(60%+4/9×50%)÷37/60-(减)5/6(40%+1/3)÷2/3×(1-(减)75%)列式计算.一个数是600,比另一个数多20%.求另一个数.(列方程)
1.1/5÷18/25-(减)5/24÷5/6
=1/5×25/18-5/24×6/5
=5/18-1/4 =10/36-9/36 =1/36
2.(60%+4/9×50%)÷37/60-(减)5/6
=(6/10+4/9×1/2)×60/37-5/6
=(54/90+20/90)×60/37-5/6
=74/90×60/37-5/6
=4/3-5/6 =8/6-5/6 =1/2
3.(40%+1/3)÷2/3×(1-(减)75%)
=(4/10+1/3)×3/2×25%
=(4/10 ×3/2 +1/3 ×3/2)×1/4
=(6/10+1/2)×1/4
=(6/10+5/10)×1/4
=11/10×1/4 =11/40
4.一个数是600,比另一个数多20%.求另一个数.(列方程)
设另一个数为x.
x(1+20%)=600
x=600÷1.2
x=500
1/5÷18/25-(减)5/24÷5/6
=1/5*25/18-5/24*6/5
=5/18-1/4
=(10-9)/36
=1/36
(60%+4/9×50%)÷37/60-(减)5/6
=(3/5+4/9*1/2)*60/37-5*6
=37/45*60/37-5/6
=4/3-5/6
=(8-5)/6
=1/2...
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1/5÷18/25-(减)5/24÷5/6
=1/5*25/18-5/24*6/5
=5/18-1/4
=(10-9)/36
=1/36
(60%+4/9×50%)÷37/60-(减)5/6
=(3/5+4/9*1/2)*60/37-5*6
=37/45*60/37-5/6
=4/3-5/6
=(8-5)/6
=1/2
(40%+1/3)÷2/3×(1-(减)75%)
=(2/5+1/3)*3/2*(1-3/4)
=11/15*3/2*1/4
=11/10*1/4
=11/40
设另一个数是x
(600-x)/x*100%=20%
x=500
收起
六年级计算中的技术几道算术题。球速度解答!解答的好并且对的加悬赏~ 最1:1998又1994分之3÷1997 原式=(1+1997+3/1994)/1997=1+1/1997+3
列式计算题:(1+20%)X=600,X=500
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