Question

Test Practice

1. Open Response Christine is finding the sum
28+ (-15) + 22. (Lesson 1)
A. What property of addition could she use
to write the integers in a different order?
Explain why she might want to do this.

Answer 1

Christine can use the commutative property of addition to rearrange the order of the integers in her calculation. This property states that the order of addition does not affect the sum. Using this property can make the calculation easier or more convenient.

Step-by-step explanation:

Christine can use the commutative property of addition to write the integers in a different order. This property states that the order in which numbers are added doesn't change the sum. By rearranging the order of the integers, Christine can make the calculation easier or more convenient.

For example, given the expression 28 + (-15) + 22, Christine can rearrange the order to calculate -15 + 22 + 28 or 22 + 28 + (-15). This allows her to group similar numbers together or start with the positive integers first.

Using the commutative property allows flexibility in calculations and can simplify mental math or make it more efficient.

Learn more about Commutative property of addition