tinh gia tri bieu thuc roi phan tich ket qua ra thua so nguyen to 
250x5:2=...
phan tich ra thua so nguyen to:....

tinh gia tri bieu thuc roi phan tich ket qua ra thua so nguyen to:
(1234+16) : 2 

a)Khong thuc hien phep tinh xet xem tong sau co chia het cho 9 khong?   A=270+3105+150; B=504+1378+612

b)Phan tich cac so ra thua so nguyen to:36;98;39;72

thưc hiện phep tinh va phan tich ket qua ra thua so nguyen to

4.5² -3² :2⁴  

1)trong mot phepnhan co thua so thu hai la 64, khi thuc hien phep nhan, ban Minh da viet cac tich rieng thang cot voi nbhau nen ket qua tim duoc la 870. tim tich dung cua phep nhan

2 ) Khi thuc hien phep nhan 983 voi 1 so co 3 chu so , ban binh da dat tich rieng thu 2 thang cot voi tich rieng thu 3 nen duoc ket qua la 70776 . Em hay tim thua so co 3 chu so chua biet trong phep nhan tren , biet chu so hang tram hon chu so hang chuc 1 don vi

an thuc hien mot phep nhan co thua so la36,do so y nen an da viet tich rieng thang cot nhu phep cong nen duoc ket qua sai la3258.tim tich dung cua phep nhan

khi phan tich ket qua cua tong 2012+10²⁰¹⁴ ra thua so nguyen to co chua thua so nguyen to 3 va 5 khong ?

Thuc hien phep tinh roi lam tron ket qua den chu so thap phan thu hai:

a) 5,3013 + 1,49 + 2,364 + 0,154

b) (2,635 +8,3) - (6,002+0,16)

c) 96,3 .3,007

d) 4,508:0,19

khi thuc hien phep nhan ban mai viet nham chu so 4 o hang don vi cua 1 thua so thanh chu so 1.Do do ket qua tim duoc la 1775.Tim cac thua so dung cua phep nhan do biet tich dung la 1770