\(\dfrac{1}{2}\times\dfrac{1}{3}+\dfrac{2}{3}+\dfrac{1}{2}\)
\(=\dfrac{1}{6}+\dfrac{2}{3}+\dfrac{1}{2}\)
\(=\dfrac{1}{6}+\dfrac{4}{6}+\dfrac{3}{6}\)
\(=\dfrac{8}{6}=\dfrac{4}{3}\)
a.1/5x1/2:3/10
b.1/2x1/3:1/4
(1/1x1/2) + (1/2x1/3) + (1/3x1/4) + (1/4x1/5) +....+ (1/72x1/73) =
thuận tiện 19/20x2/100+19/20x2/100
75/76x102/100-75/76x2/100
3x7/10+7/10x5+2x7/10
giá trị biểu thức
2/5+2/3x3/4
1/2x1/3-1/8
(1/2+1/3):3/9
a)2/9:2/3x1/2. b)2+1/4x4/3
c)3x1/2x1/4
Bài 1:Tính
a.1/5x1/2:1/3 b.2/9:2/3x1/2
c.1/2x1/3+1/4 c.2/7:2/3-1/7
Giúp mình nhé :)
1/2x1/3-1/8=???
tính:
a).5/2x1/3+1/4
b).5/2+1/3x1/4
c).5/2-1/3:1/4
ai làm đầy đủ phép tính đáp số mik tick.nói luôn ra đáp án mik k tick
1,tính:
a,1/2x2/3x3/4= b,7/8x8/9x9/10=
c,5/14x7/15x28/7= d,2x1/2x3x1/3x4x1/4x5x1/5=
2,tính:
a,7/20-(5/8-3/5)= b,5/6+(5/9-1/4)=
c,9/10-(2/5+3/10)+7/20=
3,tìm x:
a,1/2+x=5/6 b,5/6-x=1/3 c,x-1/=3/10 d,1/3x x=1/6
Tính nhanh:
1+2x1+3=?
