Question

Niu has decorated xxx cards. He started with 242424 stickers, and he used 444 stickers per card. Which expressions can we use to describe how many stickers Niu has left?

Answer 1

If your using khan C & E

Explanation:

a little cheating

Answer 2

The required expression is 24 - 4x

Explanation:

Given,

Initial number of stickers she has = 24,

Also, the number of stickers she used for a card = 4,

⇒ the number of stickers she used for x cards = 4x,

So, the number of stickers she left after decorating x cards = Initial number of stickers - the number of stickers used for x cards,

= 24 - 4x

Which is the required expression.