9/8 × 2/3+2 : 5/4
= 3/4 + 2 x 4/5
= 3/4 + 8/5
= 15/20 + 32/20
= 47/20
=3/4+2.4/5
=3/4+8/5
=15/20+32/20
=47/20
`= 3/4 + 2 xx 4/5`
`= 3/4 + 8/5`
`= 15/20 + 32/20`
`= 47/20`
9/8 × 2/3+2 : 5/4
= 3/4 + 2 x 4/5
= 3/4 + 8/5
= 15/20 + 32/20
= 47/20
=3/4+2.4/5
=3/4+8/5
=15/20+32/20
=47/20
`= 3/4 + 2 xx 4/5`
`= 3/4 + 8/5`
`= 15/20 + 32/20`
`= 47/20`
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+2+2+2+3+3+3+4+4+4+5+5+5+6+6+6+7+7+7+8+8+8+9+9+9+.......+n
Tìm n
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
Chọn phép tính đúng:
A 1/2×1/2=1×1 2×2=1/4
B 3/5×4/9=3×9 5×4=2720
C 5/3×3/7=3×3 5×7=935
D 7/9×3/8=7×3/ 9×8=724
tính
a. 4/9 + 1/2 b. 3/8 + 1/2 c. 9/8 + 3/5 d. 5 - 3/4
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 =
2/3 = 2 x 4/ 3 x 4 =......../.........
8/14 = 8 : 2/ 8 : 2/ 14 : 2 =........./..........
5/9 = 5 x......./ 9 x 3 =......../.........
35/ 40 = 35 : 5/ 40 : ............. =......./...........
giúp mình với trả lời mình tick cho nhé
\(\dfrac{3}{7}\) + 4 = ?
\(\dfrac{5}{9}\) x 3 = ?
\(\dfrac{7}{8}\) - \(\dfrac{2}{9}\)= ?
5 - \(\dfrac{3}{4}\)= ?
\(\dfrac{5}{7}\) : 6 = ?
\(\dfrac{5}{6}\) x \(\dfrac{2}{7}\)= ?
3 + \(\dfrac{3}{4}\)= ?
\(\dfrac{3}{5}x\dfrac{4}{8}\) = ?
5 : \(\dfrac{3}{8}\)= ?
Mong mn trả lời