what is the fact family for 31?
31, 22, 9
Addition: 31 + 9 = 40
Subtraction: 31 - 9 = 22
Subtraction: 22 - 9 = 13
To find the fact family for 31, we need to look for three numbers that can be used to create addition and subtraction facts with 31. The numbers we can use are 31, 1, and 30. Here's the fact family for 31:
31 + 1 = 32
1 + 31 = 32
32 - 1 = 31
32 - 31 = 1
So, the fact family for 31 is: 1, 31, and 32.
To determine the fact family for the number 31, we need to identify the related addition and subtraction facts.
For addition, we can start with any two numbers that make 31 when added together. Let's choose 20 and 11:
20 + 11 = 31
Now, for subtraction, we need to take the two numbers from the addition fact and find the differences:
31 - 20 = 11
31 - 11 = 20
So, the fact family for the number 31 is:
20 + 11 = 31
31 - 20 = 11
31 - 11 = 20