cho so 1960 so nay se thay doi nhu the nao ? hay giai thich

a neu xoa bo chu so 0

b neu viet them 1 chu so 1 vao sau so do

c  neu doi cho hai chu so 9 va 6 cho nhau

cho so 45 so do se thay doi nhu the nao neu ?

a] neu soa bo so bo so 5 trong so 45 ta con lai so 4

b] neu soa bo chu so 4 trong so 45 ta con lai so 5

Mot so tu nhien co ba chu so se thay doi nhu the nao neu ta viet them chu so 3 vao truoc so do?

1 so tu nhien co 3 chu so se thay doi nhu the nao neu ta viet them cu so 3 vao truoc so do ?

1 so tu nhien khac 0 se thay doi nhu the nao neu ta viet them :

a) chu so 0 vao cuoi so do ?

b) chu so 2 vao cuoi so do ?

so 2016 thay doi nhu the nao neu

a xoa bo di chu so 6

b viet them chu so 3 vao sau chu so 6

c doi cho hai so 0 va 1 cho nhau

d viet them dau phay vao giua chu so 1 va 6

Cho so 19,99 hoi so nay se thay doi nhu the nào se : 

a ) xoa bo hai chu so phan thấp phan

b) thay cac chu so phan thấp phan bang so 1

a Gia tri mot phan so se thay doi nhu the nao neu ta them vao tu so mot so bang mau so va giu nguyen mau so

b Gia tri mot phan so se thay doi nhu the nao neu ta them vao tu so mot so bang tu so va giu nguyen mau so

mot so tu nhien co ba chu so thay doi nhu the nao neu ta viet them chu so 3 vao truoc so do?