Bai 1:Tim tat ca cac phan so bang phan so 34/51 co mau so tu nhien nho hon 13.

Bai 2:Tim va lap cac cap phan so bang nhau ma tu va mau dung 4 trong 5 so:2;4;8;16;32.

tim cac phan so bang nhau trong cac phan so duoi day

2/5 4/7 12/30 12/21 20/35 40/100

giai chi tiet ra gium mk

vi du thoi chu k pai that dau

2/5 bang 12/30

vi du day chu k pai that

tim cac phan so co tu so be hon 30 va: bang phan so 5/3 va bang phan so 4/7 dang cAN GAP

Tim cac phan so theo thu tu tu cac phan sô 6/10 ,44/66,30/55 sao cho mau cua phan so thu nhat bang tu cua phan so thu hai ,mau phan so thu hai bang tu cua phan so thu ba

cho cac so 71,8,11,0

a viet tat ca cac phan so co tu so va mau so la cac so da cho 

b tim trong do cac phan so nho hon 1 cac phan so lon hon 1 cac phan so bang 1

tim 1 phan so bang phan so 31 / 45 , biet phan so can tim co tu sova mau so deu la cac so co 2 chu so

Cac chu so phan muoi, phan tram, phan nghin cua mot so thap phan co 3 chu so o phan thap phan la 3 so le lien tiep . Tong cac chu so o phan thap phan bang phan nguyen cua so do, cac chu so o phan nguyen va phan thap phan deu khac nhau . Tim    so thap phan do ?

bai 1.A,sap xep cac phan so sau day theo thu tu tu lon den be ;5/6,13/8,8/9 ,1/3 ,3/2 ;B,tim tat ca cac phan so sau cho mau so la so co 2 chu so . Cac ban giup to nhe .

tim cac so x,y,z biet x -1 phan 2  bang y cong 3 phan 4 bang z-5 phan 6 va 5z - 5x - 4y bang 50