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Elementary Math Definitions--Addition Subtraction Concepts--Fact Family

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# Fact Family

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Addition and Subtraction

## Definition

A fact family is a group of related addition and subtraction facts that use the same numbers.

## Description

A fact family is a group of related mathematical facts that use the same numbers. For example, the numbers 3, 4, and 7 form a fact family with the following equations:

3 + 4 = 7

4 + 3 = 7

7 − 4 = 3

7 − 3 = 4

This concept helps students understand the relationship between addition and subtraction.

In mathematics, understanding fact families is crucial for developing fluency in arithmetic operations. It helps students recognize patterns and relationships between numbers, making it easier to solve problems and understand more complex mathematical concepts.

In real-world applications, fact families are used in various scenarios, such as calculating change, determining quantities, and more. For example, if you have 7 candies and give away 4, you know you have 3 left, showing the relationship between the numbers in the fact family.

**Teacher's Script:** "Today, we will learn about fact families. A fact family is a group of math facts that use the same numbers. For example, if we have 3, 4, and 7, we can make the equations 3 + 4 = 7, 4 + 3 = 7, 7 − 4 = 3, and 7 − 3 = 4. Can you think of other fact families?"

For a complete collection of terms related to Addition and Subtraction click on this link: __Addition and Subtraction Collection__

Common Core Standards | CCSS.MATH.CONTENT.1.OA.B.3, CCSS.MATH.CONTENT.2.NBT.B.9 |
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Grade Range | 1 - 3 |

Curriculum Nodes |
Arithmetic• Addition• Addition Expressions and Equations |

Copyright Year | 2021 |

Keywords | addition, subtraction, equation, place value |