Fact Families: Addition and Subtraction Partners
Use the same numbers to make addition and subtraction facts
Fact Families: Addition and Subtraction Partners
Use the same numbers to make addition and subtraction facts
Math - Grade K-1
- 1
Use the numbers 2, 3, and 5. Write two addition facts.
The two smaller numbers join together to make the bigger number.
The two addition facts are 2 + 3 = 5 and 3 + 2 = 5. - 2
Use the numbers 2, 3, and 5. Write two subtraction facts.
The two subtraction facts are 5 - 2 = 3 and 5 - 3 = 2. - 3
Fill in the missing number: 4 + 1 = __.
Start at 4 and count one more.
The missing number is 5 because 4 and 1 more make 5. - 4
Fill in the missing number: 5 - 1 = __.
The missing number is 4 because taking 1 away from 5 leaves 4. - 5
Use the fact 6 + 2 = 8. Write a subtraction fact with the same three numbers.
Start with the total, 8, when you write a subtraction fact.
One related subtraction fact is 8 - 6 = 2. Another correct answer is 8 - 2 = 6. - 6
Look at this fact family: 1 + 7 = 8, 7 + 1 = 8, 8 - 1 = 7, 8 - 7 = __. Fill in the missing number.
The missing number is 1 because 8 - 7 = 1. - 7
Use the numbers 3, 4, and 7. Write the whole fact family.
Write two addition facts and two subtraction facts.
The fact family is 3 + 4 = 7, 4 + 3 = 7, 7 - 3 = 4, and 7 - 4 = 3. - 8
Which three numbers make a fact family? Circle the set: 2, 5, 7 or 2, 5, 8.
Add the two smaller numbers. They should equal the biggest number.
The set 2, 5, 7 makes a fact family because 2 + 5 = 7. - 9
Fill in the missing number: __ + 2 = 6.
The missing number is 4 because 4 + 2 = 6. - 10
Fill in the missing number: 6 - __ = 2.
Think about the related addition fact: 4 + 2 = 6.
The missing number is 4 because 6 - 4 = 2. - 11
Use the numbers 0, 5, and 5. Write two addition facts.
The two addition facts are 0 + 5 = 5 and 5 + 0 = 5. - 12
Use the numbers 0, 5, and 5. Write two subtraction facts.
Subtracting zero keeps the number the same.
The two subtraction facts are 5 - 0 = 5 and 5 - 5 = 0. - 13
There are 3 ducks in a pond and 3 ducks on the grass. There are 6 ducks in all. Write one addition fact and one subtraction fact.
One addition fact is 3 + 3 = 6. One subtraction fact is 6 - 3 = 3. - 14
Use the numbers 4, 5, and 9. Fill in the missing facts: 4 + 5 = 9, 5 + 4 = 9, 9 - 4 = __, 9 - 5 = __.
Subtraction facts use the same three numbers as the addition facts.
The missing facts are 9 - 4 = 5 and 9 - 5 = 4. - 15
Make a fact family with 1, 8, and 9. Write all four facts.
The fact family is 1 + 8 = 9, 8 + 1 = 9, 9 - 1 = 8, and 9 - 8 = 1.