bai 1: tinh nhanh

168x168-168x58 / 110

( 456x11+912 )x37 / 13x74

864x48-432x96 / 864x48x432

16x17x5 / 16x16+11

45x16-17 / 28+45x15

bai 2: tinh bang 2 cach

a . ( 15/8 - 3/4 ) x 4

b. 3x ( 2/3 + 7/9 )

bai 3 : tim so tu nhien n

121/ 27 x 54/11 < n < 100/21 : 25/126

giup mk ca 3 bai nha cac ban , cam on cac ban nhieu

nhanh nen nha , chieu mai mk phai nop bai roi

Gia su A va B la hai diem thuoc do thi ham so y=3x+1

a, tung do cua A bang bao nhieu neu hoanh do cua no bang 2/3

b, hoanh do cua B bang bao nhieu neu tung do cua no bang _8

Ban Tam danh so trang cua mot cuon vo co 110 trang bang cach viet day so tu nhien 1,2,3,.....,110. Hoi ban Tam phai viet tat ca bao nhieu chu so ?

cho 3 so a,b,c.Trong do a=18,b=24 va c bang trung binh cong cua a,b,c.Khi do c bang bao nhieu?

The tich cua hinh lap phuong be bang 125 cm3 ,va bang 5 phan 8 the tich cua hinh lap phuong lon .Hoi

a)The tich cua hinh lap phuong lon bang bao nhieu phan tram the tich cua hinh lap phuong be ?

b)The tich hinh lap phuong lon bang bao nhieu xang -ti met khoi

The tich hinh lap phuong be bang 125cm3 va bang 5 phan 8 the tich cua hinh lap phuong lon .Hoi

a) the tich cua hinh lap phuong lon bang bao nhieu phan tram the tich cua hinh lap phuong

b)The tich hinh lap phuon lon bang bao nhieu xang -ti-met khoi

neu 1/2 cua a bang 2b thi 9/8a=kb . Vay k bang bao nhieu ?

cho A =\(\frac{168.168-168.58}{110}\)

hỏi a có giá trị bằng bao nhiêu

cho a=16 , b= 34 , c= 104 hoi 

boi chung nho nhat cua a,b,c bang bao nhieu lan uoc chung lon nhat cua a b, c