Anna and Belle are two friends who are in grade 5 at Lason Elementary School. They plan to put together their weekly allowances to be donated to an animal care foundation. Anna and Belle have $12 and $8, respectively. They agreed to set aside one-fifth of their money. Write expressions to match and then solve it.
- The expression is ¹/₅ x (12 + 8).
- The solution is 4.
<h3>
Further explanation</h3>
<u>Given:</u>
- Anna and Belle plan to put together their weekly allowances to be donated to an animal care foundation.
- They have $12 and $8, respectively.
- They agreed to set aside one-fifth of their money.
<u>Question:</u>
Write expressions to match and then solve it.
<u>The Process:</u>
Here are some early expressions that need attention.
- one-fifth is
![\boxed{\frac{1}{5}}](https://tex.z-dn.net/?f=%5Cboxed%7B%5Cfrac%7B1%7D%7B5%7D%7D)
- the sum of 12 and 8 is
![\boxed{(12 + 8)}](https://tex.z-dn.net/?f=%5Cboxed%7B%2812%20%2B%208%29%7D)
The expression for one-fifth of the sum is
which is the amount of money they are donating together.
We know that the key word or phrase 'of' is used to describe a common mathematical operation, which is multiplication. It is synonymous with 'the product'.
- - - - - - - - - -
Here are the steps to solve the expression.
Firstly, we add up their weekly allowances.
![\boxed{ \ \$ 12 + \$ 8 = \ ? \ }](https://tex.z-dn.net/?f=%5Cboxed%7B%20%5C%20%5C%24%2012%20%2B%20%5C%24%208%20%3D%20%5C%20%3F%20%5C%20%7D)
![\boxed{\boxed{ \ \$ 20 \ }}](https://tex.z-dn.net/?f=%5Cboxed%7B%5Cboxed%7B%20%5C%20%5C%24%2020%20%5C%20%7D%7D)
Secondly, one-fifth multiplied by the number of their weekly allowances.
![\boxed{ \ = \frac{1}{5} \times (12 + 8) \ }](https://tex.z-dn.net/?f=%5Cboxed%7B%20%5C%20%3D%20%5Cfrac%7B1%7D%7B5%7D%20%5Ctimes%20%2812%20%2B%208%29%20%5C%20%7D)
![\boxed{ \ = \frac{1}{5} \times \$ 20 \ }](https://tex.z-dn.net/?f=%5Cboxed%7B%20%5C%20%3D%20%5Cfrac%7B1%7D%7B5%7D%20%5Ctimes%20%5C%24%2020%20%5C%20%7D)
Or it can be written as, ![\boxed{ \ = \$ 20 \div 5 \ }](https://tex.z-dn.net/?f=%5Cboxed%7B%20%5C%20%3D%20%5C%24%2020%20%5Cdiv%205%20%5C%20%7D)
![\boxed{\boxed{ \ \$ 4 \ }}](https://tex.z-dn.net/?f=%5Cboxed%7B%5Cboxed%7B%20%5C%20%5C%24%204%20%5C%20%7D%7D)
Thus, they donated together for $ 4.
<h3>Learn more</h3>
- How many times does he switch strokes during the race? brainly.com/question/11494844
- 7 copies of the sum of 8 fifths and 4 brainly.com/question/961462
- How many minutes will it take her to complete her sewing project? brainly.com/question/37518
Keywords: create and solve, a story problem, about, two friends, their weekly allowance, whose, solution, the expression 1/5 x (12 + 8), Anna and Belle, in grade 5, Lason Elementary School, plan to put together, to be donated, to an animal care foundation, $12 and $8, respectively, they agreed, to set aside, one-fifth, their