Reann has stickers. She gives her friend half, and then her brother gives her 8 new ones. She ends up with 12 stickers. How many did she start with? Identify the operations needed to solve this problem.

Question

addition and multiplication
subtraction and multiplication
subtraction and division
addition and division

Answer 1

The operations needed to solve this problem are subtraction and division.

To solve the problem:
1. Start with the total number of stickers that Reann ended up with, which is 12.
2. Subtract the number of new stickers given by her brother, which is 8. This can be represented as 12 - 8 = x.
3. The result of the subtraction represents the number of stickers Reann had after giving half of them to her friend.
4. Divide this result by 2 to find the number of stickers Reann initially had. This can be represented as x/2 = y.
5. The value of y represents the number of stickers Reann started with.

Therefore, by performing subtraction and division, we can determine the initial number of stickers Reann had.