=1 - ( 2/8 + 5/8)
= 1 - 7/8
= 1/8
= 1- ( 2/8 + 5/8 )
= 1 - 7/8
= 8/8 - 7/8 = 1/8
=1 - ( 2/8 + 5/8)
= 1 - 7/8
= 1/8
= 1- ( 2/8 + 5/8 )
= 1 - 7/8
= 8/8 - 7/8 = 1/8
Hãy thay dấu * bằng chữ số thích hợp để có. 1*/*5 = 1/3
4*/*8 = 4/8
1**/**5 = 1/5
4**/**8 =4/8
a) 5/2 nhân 1/4 - 1/8=..............................................................................................................................................................
b) 5/2 + 1/4 nhân 1/8=.............................................................................................................................................................
c) 5/2 : 1/4 -1/8=.......................................................................................................................................................................
d) 5/2 + 1/4 : 1/8 =.....................................................................................................................................................................
giải hộ mình luôn nhé . không biết tớ có làm phiền các bạn không ? ^ _ ^ !
2/5+2/3+3/4
2/6+3/12
5/6+1/3
1/3+5/12+5/6
5/8+4/7
1/5+5/35
5/8+3/4
1/6+1/3+1/12
1/6+5/24+2/3
7/3+8/7
2/5+1/6
1/7+1/4+6/7+3/4
giúp với
và ai giải được gọi cụ
1) 1/3 x 1/2 x 3/7 2) 5/4 x 1/3 + 1/7 3) 8 x ( 8/9-2/3 ) 4) 5/6 x 48/20 x 1/2 5) ( 2/5 + 3/4 ) x 8 6) 10 x ( 1/2-1/5 )
Câu 1:tính
a,3/4+1/8=.......... b,4/5+3/10=..............
x-5/7=3/5*1/2 x*2/3=8/8+3/4
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1.Khoanh vào các phân số bằng nhau
a.1/2, 2/4, 5/8, 4/8, 9/10, 3/6
b.1/4, 2/9, 2/8, 3/12, 5/16, 5/20
c.2/5, 4/15, 8/20, 8/25, 10/25, 12/20
C=3/2+3/4+3/8+3/16+...+3/128
D=1/2+1/4+1/8+...+1/1024
E=5/2+5/8+5/32+5/128+5/512+5/2048
1+2+3+4+5+6+7+8+9+1+2+3+4+5+6+7+8+9+1+2+3+4+5+6+7+8+9=?
1+1+1+1+1+2+3+4+5+6+7+8+9+10 x 1+1+1+1+1+2+3+4+5+6+7+8+9+10 +1+1+1+1+1+2+3+4+5+6+7+8+9+10 - 10 x 9 - 9 + 45 +46 +47 =
1-1*5*6-8+5-7*8+5-4+4+5+6+7+8+9-100