Fact families

key notes :

⛱️ A fact family is two addition number sentences and two subtraction number sentences that all use the same three numbers.

Learn with an example

✈️ What fact is missing from this fact family?

2 + 12 = 14
14 − 12 = 2
12 + 2 = 14

___________

  • This fact family has two addition number sentences and one subtraction number sentence. It is missing one subtraction number sentence.
  • The missing subtraction number sentence is the related subtraction fact for 14 − 12 = 2.
  • 14 − 2 = 12 is the missing fact.

✈️ What fact is missing from this fact family?

14 − 3 = 11
11 + 3 = 14
14 − 11 = 3

______________

  • This fact family has one addition number sentence and two subtraction number sentences. It is missing one addition number sentence.
  • The missing addition number sentence is the related addition fact for
  • 11 + 3 = 14.
  • 3 + 11 = 14 is the missing fact.

✈️ What fact is missing from this fact family?

6 − 5 = 1
5 + 1 = 6
6 − 1 = 5

__________

  • This fact family has one addition number sentence and two subtraction number sentences. It is missing one addition number sentence.
  • The missing addition number sentence is the related addition fact for
  • 5 + 1 = 6.
  • 1 + 5 = 6 is the missing fact.

Let’s practice!🖊️