Các câu hỏi tương tự
bai 1:tinh nhanh hon so
a, 11 2/9+8 3/5+8 7/9+ 1 2/5
b, 4 2/3+5 1/2+1/3+4 1/2
c, 19 2/7+5 3/4+4 1/4-9 2/7
bai 2:hinh chu nhat co chieu dai 2 3/4m, chieu rong kem chieu dai la 1 1/2m. tinh chu vi va dien tich hinh chu nhat do.
Voi 4 chu so 2 va cac phep tinh , hay lap ra day tinh de co ket qua lan luot la 1 , 2, 3 , 4 , 5 , 6 , 7 , 8 ,9 , 10
Vi du 0= 2×2-2×2
1.tim so bi chia trong phep chia cho 12 co thuong la 35 va so du la so le co 2chu so2.hieu cua so lon nhat co 4 chu so khac nhau va so nho nhat co 4 chu sola bao nhieu3.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 nhat4.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 nhat5.tim y biet (5/7 - y) nhan 4/5 7/10 + 1/26.hieu 2 so 1/3 so be.To...
Đọc tiếp
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
TICH CUA 2 SO A VA B LA 1 SO CO 2 CHU SOCHIA HET CHO 2 VA 3 CHIA 5 DU 1 CHU SO HANG CHUC NHO HON HU SO HANG DV KHI CONG 2 DON VI VAO A 4 DON VI VAO B THI TICH LA 98 TIM A VA B
GIUP VOI
kho1 va kho 2 co 84000 bao gao so bao kho 2 bang 4/3 so bao kho 1 sau khi hai kho ban ra mot so hang thi so con lai cua kho 1 it hon so con lai cua kho 2 la 19200 bao tinh so bao moi kho biet rang so bao ban ra kho 2 bang 3/4 so ban ra kho 1.
Ai la nhanh minh tik cho nha
C = 5 va 9/10 ÷ 3/2-(2va1/3×4va1/2-2×2va 1/3) ÷ 7/4
"Va" la hon so nha cac ban
Cho 4 chu so 2 va cac phep tinh , hay lap day tinh co ket qua lan luot la 1 2 3 4 5 6 7 8 9 10
tich cua 2 so A va B la mot so co hai chu so chia het cho 2 va 3 va chia 5 du 1,chu so hang chuc nho hon chu so hang don vi .khi cong hai don vi vao A va 4 don vi vao B thi ta co tich moi la 98. hay tim A va B.
cac ban nao biet giai bai toan nay k?De bai nhu sau:viet 3 phan so khac nhau co cung mau so ma moi phan so do:1 la lon hon phan so 1/5,2 la be hon phan so 1/4 va 3 la lon hon phan so 1/5,be hon phan so 1/4