IXL | Commutative and associative properties of addition

Using the associative property, type the missing numbers that make this addition sentence true.

Hint: There are many possible answers, but only ones obtained using the associative property will be considered correct.

( + 1) + 55 =

84 + (1 + )

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Learn with an example

question

( + 88) + 69 =

12 + (88 + )

key idea

Associative property:
You can group the addends with parentheses and get the same sum.

solution

Use the associative property. The two sides of the equation should use the same numbers but have different grouping. 12 and 69 must go in the blanks.

Looking for more? Try these:

Lesson: The commutative property

Lesson: The associative property

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Teacher tools

Work it out

Not feeling ready yet? These can help:

Properties of addition

Lesson: The commutative property

Lesson: The associative property

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