Question

A teacher bought 12 sheets of stickers to use on the homework of her students. Each sheet had 48 stickers. At the end of the year, the teacher had 123 stickers remaining.

Estimate how many stickers the teacher used.

Answer 1

453

Explanation:

12×48=576 (number of stickers she has)

576-123=453 (number of stickers she had-number of stickers she had left)