\(\frac{12}{16}=\frac{3}{4}\)
\(\frac{45}{54}=\frac{5}{6}\)
\(\frac{30}{65}=\frac{6}{13}\)
\(\frac{25}{75}=\frac{1}{3}\)
\(\frac{12}{1000}=\frac{3}{250}\)
rut gon roi quy dong va phan so
34 phan 5i va 38 phan 95 msc
54 phan 36 va 26 phan 39 msc
42 phan 28 va 27 phan 45 msc
33 phan 25 va 25 phan 75 msc
21 phan 35 va 18 phan 24 msc
33 phan 77 va 25 phan 75
1.Rut gon cac phan so sau: 15/24 ; 21/42 ; 54/18 ; 100/25 . (day la toan lop 4 cac ban a, lam nhanh cho minh cac ban nhe)
Rut gon phan so roi so sanh cac phan so
A,16 phan 20 va 9 phan 15
B,6 phan 8 va 3 phan 12
C, 15 phan 25 va 36 phan 45
Loi giai cu the nhe cac ban
rut gon cac phan so
25 phan 40
42 phan 72
80 phan 100
Hay rut gon cac phan so sau :
9 phan 6 ; 12 phan 4 va 90 phan 70
Cac ban hay rut gon va doc giong nhu minh nhe.
Rut gon phan so 39/65
rut gon roi so sanh hai phan so
18/72 va15/20
24/36 va 20/50
5/6 va 45/54
rut gon phan so
65 phan 91 =
1414 phan 1919 =
Cho cac phan so 5 / 7, 6 / 9 , 12 / 24 , 23 / 24 va 6 / 14
a Tim phan so toi gian
b Phan so nao rut gon duoc . Hay rut gon
ai nhanh nhat minh TICK cho
