IXL | Write variable expressions: word problems

There are

yellow dogs out of a total of 12 dogs at obedience class. Choose the expression that shows the number of dogs that are not yellow.

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Learn with an example

question

Tracy collected

gold stars in her video game in Level 1. She collected another 11 gold stars in Level 2. Choose the expression that shows the number of gold stars Tracy collected in all.

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key idea

A variable is a letter that represents an unknown number.

An expression is a group of numbers, symbols, and variables that represents another number.

solution

Look for a pattern.

Try

Tracy collected 2 gold stars in her video game in Level 1. She collected another 11 gold stars in Level 2.

which is 13.

Try

Tracy collected 3 gold stars in her video game in Level 1. She collected another 11 gold stars in Level 2.

which is 14.

Try

Tracy collected 4 gold stars in her video game in Level 1. She collected another 11 gold stars in Level 2.

which is 15.

The pattern shows that in order to find the number of gold stars Tracy collected in all, you always add 11 to

This is the correct expression:

Looking for more? Try these:

Lesson: Writing algebraic expressions

$Confetti$

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Now entering the Challenge Zone—are you ready?

Teacher tools

Work it out

Not feeling ready yet? These can help:

MM.1Write variable expressions

E.2Add, subtract, multiply, or divide two whole numbers: word problems

Lesson: Writing algebraic expressions

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