Adding and Subtracting Fact Family Adventures

Lesson Plan - Get It!

Audio:

Addition and subtraction are like magic tricks for numbers. Here’s how they work.

Addition

Addition is like bringing groups together to make one big group.

The answer you get when you add is called the sum.

Here’s an example.

5 + 3 = 8

Five and three together make eight!

• Did you know?

You can flip the numbers around, and it still works!

3 + 5 = 8

You can also write addition vertically, which means up and down.

Subtraction

Subtraction is like taking something away from a group.

The answer here is called the difference.

8 - 3 = 5

If you have 8 apples and eat 3, you’ll have 5 left.

But be careful! The bigger number always comes first in subtraction.

This is easier to see when you write it vertically.

Here’s a Cool Trick.

You can check subtraction using addition. It’s like a number puzzle!

If 10 - 6 = 4, you can check by flipping it.

6 + 4 = 10

One More Thing

Numbers like to hang out in families called fact families.

These families have three numbers that work together to make addition and subtraction sentences.

Here is an example.

4, 6, and 10 are a fact family.

• 4 + 6 = 10
• 6 + 4 = 10

• 10 - 6 = 4
• 10 - 4 = 6

Think of fact families as number BFFs—they’re always connected!

Listen to this fun song about fact families.

• Are you ready to show off your fact-family skills?

Head to the Got It? section!