These numbers form an addition and subtraction fact family 1,2,3
1 + 2 = 3
3 - 2 = 1
To create an addition and subtraction fact family from the numbers 1, 2, and 3, we need to find three related equations:
1. Addition: 1 + 2 = 3
2. Subtraction: 3 - 2 = 1
3. Subtraction: 3 - 1 = 2
These equations form a fact family where the numbers 1, 2, and 3 are related through addition and subtraction operations.
To determine if the numbers 1, 2, and 3 form an addition and subtraction fact family, we need to check if each number can be used to create addition and subtraction equations with the other numbers.
Addition fact family:
1 + 2 = 3 (1 added to 2 equals 3)
2 + 1 = 3 (2 added to 1 equals 3)
Subtraction fact family:
3 - 2 = 1 (3 minus 2 equals 1)
3 - 1 = 2 (3 minus 1 equals 2)
Since we can create both addition and subtraction equations using the numbers 1, 2, and 3, we can conclude that these numbers form an addition and subtraction fact family.