# What are variables in algebra?

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##### Intros

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##### Examples

###### Lessons

**Unknowns in addition or subtraction equations**

Draw the missing circles in the unknown box. Write the missing number in the equation.**Unknowns in multiplication or division equations**

Finish drawing the circles to solve the equation. Trace around the circles to make equal groups.**Writing equations with variables for addition or subtraction**

Write the equation with variables for the phrase:**Writing equations with variables for multiplication or division**

Write the equation with variables for the phrase:**Equations with variables: word problems**

Write the equation for the word problem. Use the variable $x$ for the unknown value.- Allie picked 9 strawberries and Troye picked 8 strawberries. How many strawberries did they pick in total?
- Brian got 24 on the quiz. Ellie got 2 points less than Brian. How many points did Ellie get on her quiz?
- For which case should you use multiplication or division?
- There are 5 red apples. There are 2 times as many green apples as red apples. How many green apples are there?
- There are 8 red apples. There are 2 times as many red apples as green apples. How many green apples are there?

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