What is Addition?

Foundational

Learn the basic concept of addition as 'putting together' or 'counting all'. This stack introduces the plus (+) and equals (=) signs, the foundational symbols for all addition problems.

What is Addition?

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What does it mean to add numbers together?

Adding means finding the total number of items when you combine two or more groups. It's like putting things together and counting them all.

Which sign tells you to add?

The plus sign ($+$) tells you to add numbers together.

What does the equals sign ($=$) mean?

The equals sign ($=$) means 'is the same as'. It shows that the value on the left side of the sign is the same as the value on the right side.

In the problem $3 + 2 = 5$, what is the number $5$ called?

The answer to an addition problem is called the 'sum' or 'total'.

If you have 2 apples and you get 1 more, how many apples do you have in total?

You have $3$ apples in total. $2 + 1 = 3$.

$$ 1 + 1 = ? $$

$$ 1 + 1 = 2 $$

$$ 2 + 1 = ? $$

$$ 2 + 1 = 3 $$

$$ 1 + 2 = ? $$

$$ 1 + 2 = 3 $$

How do you read the number sentence '$4 + 2 = 6$' out loud?

You can read it as "Four plus two equals six" or "Four and two is six."

What are the numbers you add together called? (For example, the $4$ and $2$ in $4+2=6$)

The numbers being added together are called 'addends'.

What is Addition?

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