Bai 1
A; 8\5+7\6+5\9-2
B;3-5\6-4\9+32\24
Bai 2; Trong mot thu vien co 1\2 so sach la truyen thieu nhi 2\5 so sach la sach giao khoa con lai la cac loai sach khac tim phan so chi so sach khac
Bai3 ;viet phan so 7\8 thanh tong cua ba phan so so toi gian co mau so khac nhau
Bai4; A;x :5\4 =9\5+1\2 B;[x +3\4]* 5\7 =10\9
Bai 5 mot manh giay hinh chu nhat co chu vi la 22\3 dm chieu dai hon chieu rong 1\2 dm tinh dien tich cua manh giay do
BAI 3 ;TRONG mot thu vien co 1\2 so sach la truyen thieu nhi 2\5 so sach la sach giao khoa con lai la sach giao khoa tim phan so chi so sach khac
BAI 4; viet phan so 7\8 thanh tong cua ba phan so toi gian co mau so khac nhau
1.tim so bi chia trong phep chia cho 12 co thuong la 35 va so du la so le co 2chu so
2.hieu cua so lon nhat co 4 chu so khac nhau va so nho nhat co 4 chu sola bao nhieu
3.mot hinh chu nhat co chieu dai gap ruoi chieu rong. Neu moi chieu tang them 1m thi duoc hinh chu nhat moi co dien tich tang them 26m2. Tinh chu vi hinh chu nhat
4.trung binh cong cua 2 phan so bang 5/12. Phan so thu nhat hon phan so thu hai 1/6. Tim phan so thu nhat
5.tim y biet (5/7 - y) nhan 4/5 =7/10 + 1/2
6.hieu 2 so =1/3 so be.Tong 2 so la 63. Tim so be
Bieu do duoi day thong ke cac loai sach trong thu vien cua mot truong tieu hoc .
Tuyen thieu nhi 60%
Sach giao khoa 22,5%
Cac loai sach khac 17,5%
- Hay cho biet, bieu do thong ke duoc nhung loai sach nao ?
- Ti so phan tram truyen thieu nhi la bao nhieu ? Ti so phan tram sach giao khoa la bao nhieu ?
- Trong thu vien co bao nhieu phan tram cac loai sach khac ?
- Cho biet trong thu vien co tat ca 50 000 quyen sach. Hay tinh so sach moi loai.
Ai nhanh minh tich
Thong ke cac loai sach trong thu vien cua mot truong tieu hoc cho biet co 50% so sach la truyen thieu nhi ; 25% so sach la sach giao khoa va 25% so sach la cac loai sach khac.
trong mot thu vien co 1\2 so sach la truyen thieu nhi 2\5so sach la sach giao khoa con lai la cac loai sach khac tim phan chi so sach khac
ho minh nhe minh cam on
bai4:an mua het 2/3 so tien an co,muavo het 3/4 so tien con lai sau khi mua sach va vo an con lai 3000 dong.Hoi an co bao nhieu tien?
bai5:mot can phong hinh chu nhat co chieu dai 8m,chieu rong bang 3/4 chieu dai.De lai nen can phong do,nguoi ta dung loai gach men hinh vuong canh 4dm.Hoi can phong duoc lat bang bao nhieu vien gach do ? (phan dien tich mach vua khong dang ke)
bai6:mot hinh thoi co hieu do hai duong cheo la muoi 1/5 m,ti so cuado dai duong cheo be va duong cheo lon la 2/5.Hoi hinh thoi do co dien tich la bao nhieu de-xi-met vuong
cac ban giup minh nhe
mot thu vien co 60/100 so sach la sach giao khoa , 25/100so sach la truyen thieu nhi ,con lai la so sach giao vien . hoi sach giao vien chiem bao nhieu phan tram so sach trong thu viebn
1. Mot hinh chu nhat co chieu dai la 48 cm, chieu rong la 30. tim ti so % cua chieu dai so voi chieu rong
2. Mot tam bia hinh chu nhat co chu vi 12 dm, chieu dai hon chieu rong 9 cm. tinh chieu dai
3. Trong 1 phep nhan tich gap 2,35 thua so thu 1 va 4,02 thua so thu 2. tim tich phap nhan do
4. Tim so tiep theo cua day so 0,7; 0,21; 0,063;...
5. Phai do them bao nhieu gam muoi vao mot binh dung 300 g dung dich 2 % muoi de nhan duoc binh dung dich co 4 % muoi
bieu do hinh quat ben cho bie ti so phan tram cac loai sach trong thu vien cua mot truong tieu hoc biet sac giao khoa co 495 quyen
a tong so sach trong thu vien la.......... quyen
b sach tham khao co........ quyen
c truyen thieu nhi co ......... quyen
biet truyen thieu nhi 40% sach giao khoa 33% sach tham khao 27%
giup minh nha ai giai duoc minh T cho