Thuc hien phep tinh :
a) 4 phan 5 + -7 phan 15 . 1, 25
b) 2 phan 5 + 3 phan 5 . ( 4 1phan2 - 3,25)
12 phan 19 . 7 phan 15. -13 phan 17.19 phan 12 . 17 phan 13
phan so nhe
toi ko biet viet phan trong may tinh thong cam
6/19.-7/11+-6/19.-4/11+-13/19
1sap xep cac phan so sau theo thu tu tan dan
a) 9/19;-25/19;20/19;42/19;30/19;14;19;-13/19
b)1/3;1/5;-2/15;1/6-2/-5;-1/10;4/15
2 doi hon so sang phan so
a) 3 1/2
b) 2 7/11
c) 4 1/7
d) -3 2/5
doi phan so sang hon so
a) -11/2
b) 112/11
c) -18/7
d) 39/65
ai lam duoc 3 cau tro len tui cho 3tk
Cho phan so A= \(\frac{1+3+5+...+19}{21+23+25+...+39}\)
a) Rut gon phan so A
b) Hay xoa 1 so hang o tu va mau de duoc 1 phan so moi bang phan so A
B1)Tim X biet
A)3(X-4)-(8-X)=12
B)4(X-5)-(X=7)=-19
C)7(X-3)-5(3-X)=11X-5
B2)a)Chung to rang cac phan so tren bang nhau
A)25/53:2525/5353:252525/535353
B)37/41:3737/4141:373737/414141
b)Tim phan so bang phan so 11/33 va biet rang hieu cua mau va tu cua no bang 6
1 13 phan 15 nhan 0 phay 75 tru (11 phan 20 cong 25 phan tram ) chia 7 phan3
quy đồng mẫu các phân số sau:
-2 phần 9 va 4 phan 25
1 phan 15va -6
11 phan 120 va 7 phan 40
24 phần 146
7 phần 30,13 phan 60,-9 phan 40
17 phần 60,-5 phần 18,-64 phần 90
ban phim minh bi liet 1 phim nen thay =0
1 13 phan 15nhan 0.75- [11 phan 20 +25%]:7 phan 5
