Write a short story problem that can be solved in one step. Write an equation that represents the problem. Name the property used to solve the problem, and then solve the problem
Lily wants to buy a toy that costs $15. She already has $7. How much more money does Lily need to buy the toy?
Equation: $15 - $7 = x
Property used: Subtraction
Solution:
$15 - $7 = $8
Lily needs $8 more to buy the toy.