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Addition is the operation of putting two or more numbers together to find their total. This short guide gives key vocabulary and example sentences to help you talk about addition clearly.

Vocabulary

Vocabulary for addition includes words for the operation itself, the numbers involved, and related terms.

Sum: The result of adding two or more numbers.
Total: The overall amount after addition.
Add: To combine numbers.
Plus: Used to indicate addition.
Combine: To bring numbers together.
Increase: To make larger by adding.

Vocabulary for addition includes words for the operation itself, the numbers involved, and related terms.

	English Word(s)	English Word(s)
	addition	plus
	sum	total
	increase	more than
	add	raise
	altogether	combined
	more	extra

Fill in the BlankThe operation of putting numbers together is called(English word).

The operation of putting numbers together is called addition.

The operation of putting numbers together is called ___ (English word).

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Expressions

Expressions for addition often use give, make, take, and set phrases like add up to.

Give a total of
Make a sum of
Take the sum of
Add up to
The total of

Expressions for addition often use give, make, take, and set phrases like add up to.

	English Expression	English Expression
	add up to	come to
	give a total of	make
	take ... and add ...	plus
	increase by	more than
	altogether	combined

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Usage

Addition sentences usually name the numbers, say the operation, and give the result. You can use plus, add, sum, and total interchangeably in simple cases.

Examples:

Twelve plus five equals seventeen.
When you add 3 and 4, the sum is 7.
The total of 8 and 6 is 14.
The numbers 9 and 10 add up to 19.

Addition sentences usually name the numbers, say the operation, and give the result. You can use plus, add, sum, and total interchangeably in simple cases.

Which sentence is correct for describing addition?

4 and 6 total plus 10.

4 plus 6 equals 10.

The sum 4 plus 6 is 10.

The sum of 4 and 6 is 10.

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Examples

Six plus four makes ten.
Add 15 and 20 to get a total of 35.
The sum of 7, 8, and 5 is 20.
The total when you add all the items is $50.

Summary

Addition means joining numbers to find how much there is in all. Key words are add, plus, sum, and total. Short expressions like add up to and give a total of help you describe addition clearly.

Which statements are true about addition? (choose all that apply)

Addition always results in a smaller number.

Use '+' or words like 'plus' to show addition.

Addition finds the difference between numbers.

Addition joins numbers to find a total.