Wren has stickers she gives her friends half and then her brother gives her a new ones she ends up with 12 stickers. How many did she start with identify the operations needed to solve this problem?
A. Subtraction and division
B. Addition to multiplication.
C. Subtraction and multiplication.
D. Addition and division.
The correct answer is D. Addition and division.
To solve this problem, you need to add the number of stickers Wren's friends gave her with the number her brother gave her, and then divide the total by 2 to find the number of stickers she started with.
Let's say Wren's friends gave her x stickers and her brother gave her y stickers. According to the problem, Wren ends up with 12 stickers after receiving stickers from both her friends and her brother.
Therefore, the equation can be written as:
(x + y) / 2 = 12
To find the value of x, we need to isolate it. We can multiply both sides of the equation by 2, yielding:
x + y = 24
Now we need to use addition to combine the number of stickers Wren received from her friends and her brother.
So, the correct operations needed to solve this problem are addition and division.