Fact Families
What is a fact family?
A group of related addition and subtraction facts that use the same three numbers.
Which number is greater: 8 or 5?
How many ones are in one ten?
10 ones
How many tally marks are in a complete group?
5
Count forward from 85 to 90.
85, 86, 87, 88, 89, 90
What three numbers belong in this fact family?
4 + 3 = 7
4, 3, 7
Fill in the missing symbol: 12 ___ 15
12 < 15
In the number 47, how many tens are there?
4 tens
A class voted for their favorite pets.
8 chose dogs, 5 chose cats, and 3 chose fish. Which pet received the fewest votes?
Fish
Count backward from 22 to 17.
22, 21, 20, 19, 18, 17
Which equation does NOT belong in this fact family?
8 + 4 = 12
12 − 8 = 4
8 + 5 = 13
4 + 8 = 12
8 + 5 = 13
I'm thinking of a number greater than 14 but less than 17. What numbers could I be thinking of?
15 or 16
What number has 3 tens and 6 ones?
36
A class voted for their favorite colors. 2 students chose blue and 4 chose red.
How many students voted altogether?
6 students
Count by 10s to 100
10, 20, 30, 40, 50, 60, 70, 80, 90, 100
Complete the missing fact:
5 + 6 = 11
6 + 5 = 11
11 − 5 = 6
11 − ___ = 5
6
Is 14 greater than, less than, or equal to 11?
Greater than
5 tens + 4 ones = ?
54
If you see two full groups of tally marks, how many tallies are there?
10
Count by 5s to 35
5, 10, 15, 20, 25, 30, 35
Which equation does NOT belong in this fact family?
5 + 3 = 8
3 − 8 = 5
3 + 5 = 8
8 − 4 = 5
3 − 8 = 5
True or False: 14 + 2 = 10 + 6
True
In the number 82, what is the value of the digit 8?
80
In a class survey, 9 students chose apples and 6 chose bananas. How many more students chose apples than bananas?
3 students
Count backward by 10s: 90, 80, 70, ___, ___, ___
60, 50, 40