When you put two groups together, you add.
Step 1: Let's Learn
Read it, or press Listen and follow the words.
A new symbol
The plus sign means put together. We write 3 + 2.
Plus (+) means put the groups together.
The equals sign tells you both sides are the same amount.
3 and 2 makes 5.
First group
Second group
Nothing appears or disappears
Joining two groups rearranges what was already there. That is why the total is fixed before you count it.
The sentence records what you did
3 + 2 = 5 is a written account of pushing two groups together. The symbols save you re-describing it every time.
Step 2: Try It Yourself
Change the parts and watch the sentence.
4 and 3 makes 7.
Step 3: Watch an Example
One step at a time.
Watch Ana Write a Sentence
Ana has 4 red counters and 3 blue counters.
- Step 1
She counts the first group: 4.
Step 4: Your Turn
Practice makes it stick.
The Toy Box
Problem 1 of 1
Sam has 5 cars. He gets 2 more. How many cars now?
Make Your Own
Build a sentence that makes 8. There is more than one way.
1 and 1 makes 2.
Step 5: Quick Check
Show what you know.
Question 1 of 2
What is 4 + 2?
Question 2 of 2
What is 6 + 3?
What You Learned
- Putting groups together is adding.
- The plus sign means put together.
- The equals sign means both sides are the same.