\(\dfrac{3}{2}\) - \(\dfrac{5}{8}\) = \(\dfrac{24}{16}\) - \(\dfrac{10}{16}\) = \(\dfrac{14}{16}\) = \(\dfrac{7}{8}\)
~ chúc em học tốt ~
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
Tính :
a) 3 / 8 + 2 / 5 + 5 / 8
b) 5 / 7 x 2 / 3 x 14 / 15
c) 3 / 8 + 2 / 5 x 5 / 8
d) 11 / 15 - ( 2/ 3 - 1 / 5 )
Tính :
a) 3 / 8 + 2 / 5 + 5 / 8
b) 5 / 7 x 2 / 3 x 14 / 15
c) 3 / 8 + 2 / 5 x 5 / 8
d) 11 / 15 - ( 2/ 3 - 1 / 5 )
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 8: tính a) 7/15 + 4/5 b) 4/5 x 5/8 c) 2/3 - 3/8 d) 1/2 : 2/5
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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Tính bằng cách thuận tiện nhất:
2/7 + 3/5 + 3/8 + 1/9 + 4/8 + 2/5 + 8/9 + 1/8 + 5/7
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
a)5/10+3/5 b)3/2+5/4
c)5/2-3/8 d)x:3/4=1/7
e)X x3/2=1/8
a, 4/5 - 1/3. 5/3-3/2
b,7/6-2/3 5/4-3/8
c, 5/6-5/8. 7/4-5/6
