Addition and Subtraction Fact Families

1st Grade•45 minutes•CCSS 1.OA.B.4

Learning Objective

I can use fact families to solve addition and subtraction problems.

Composing numbers is when smaller numbers are put together to make a larger number.

Decomposing numbers is when a larger number is taken apart into smaller numbers.

The number 7 can be composed of the numbers 3 and 4, or the numbers 5 and 2.

This lesson includes 9 practice questions to reinforce learning.

View questions preview

1. What does it mean to 'compose' numbers?

2. What does it mean to 'decompose' numbers?

3. If you have 5 apples and you want to decompose them into two groups, what are two possible groups you could make?

...and 6 more questions

Composing Numbers & Decomposing Numbers! | Mini Math Movies | Scratch Garden

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