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Fact family for addition

Teaching Transcript

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Let's explore this addition and subtraction fact family

Each corner of the triangle can be solved from the others. 5 is 8 minus 3.

Similarly, 3 is 8 minus 5

And on top, 8 is 5 plus 3

This math skill teaches the concept of a fact family for addition and subtraction, demonstrating how numbers in a triangle's corners relate through these operations; each number can be found by adding or subtracting the others.

Skill Practice

Fact family for addition

Test your understanding of fact family for addition by practicing it! Work through the below exercises to use it in practice.