Equations and Inequalities

Vocabulary

100

This is a letter that represents a number

What is a variable?

200

This is a math statement that uses an equal sign

What is an equation?

300

This statement uses symbols, such as > or <, to represent a situation

What is an inequality?

400

This is the variable that controls another variable

What is independent variable?

500

This is how we solve an equation

What is the inverse operation?

Solving Equations

100

This is how you would solve the following equation: x - 12.2 = 24.5

What is addition?

200

This is how you would solve the following equation: x/2 = 9 

What is multiplication?

300

This is how you would solve the following equation: 5x = 45

What is division?

400

This is the solution for the following equation: 6t = 42

What is 7?

500

This is the solution to the following equation: x + 3.4 = 10.1

What is 6.7?

Inequalities

100

This is the inequality for the phrase "x is less than 5"

What is x < 5?

200

This is the inequality for the phrase "more than 8 boys on the team"

What is b > 8?

300

This is the symbol used to write the inequality "Gwen is at least 16 years old"

What is greater than or equal to?

400

This is the symbol used to represent a situation that is not equal to

What is an equal sign with a slash through it?

500

This is the type of circle put on a number line that represents the symbols > or <

What is an open circle?

Writing Equations

100

This is the equation for "x more than 4 is 10"

What is x + 4 = 10?

200

This is the equation for "twice the number k equals 42"

What is 2k = 42?

300

This is the equation for "the quotient of t and 3 is 7"

What is t/3 = 7?

400

This is the equation for "the quantity of f plus 4 divided by 2"

What is (f + 4) / 2?

500

John had $20. He spent $15.62 on lunch and dessert. Write an equation to find how much money he has left. 

What is m + 15.62 = 20?

Variables

100

This is a type of variable

What is independent variable OR dependent variable?

200

This is the variable that relies on the other

What is dependent variable?

300

This is the variable that controls the other

What is independent variable?

400

This is the dependent variable in the situation: the amount of peaches sold and the total money made

What is the total money made?

500

This is the independent variable in the situation: the amount of time it takes to fill a tub with water

What is time?