Expressions and Equations

Vocabulary

100

This type of math problem has no equal sign.

Expression

200

This type of math problem has an equal sign.

Equation

300

Another word for numbers used in expressions and equations

Constant

400

Another word for the letters used in expressions and equations.

Variable

500

This type of math where numbers and symbols are used to formulate expressions and equations.

Algebra

Expressions

100

Expand the following expression - 4(x -3)  

- 4x + 12  

200

What is the sum of the expression below?

              (9c − 8d) + (2c − 6) + (−d + 3)

11c − 9d − 3

300

Sophie pays m dollars to rent a car for the weekend. On the drive home, she buys $25 worth of gasoline. Her friend Melody pays for one-half the cost of the car rental only. Write an expression you could use to determine how much Sophie spent.

1/2m + 25

400

Leon has a container filled with 450 grams of tea leaves. Each morning, he uses 3 grams to make a cup of tea. Which expression can be used to represent the amount of tea leaves remaining after x days?

450 – 3x

500

Simplify this expression. –6w + (–8) + 1 + (–7w)

-13w – 7

Equations

100

What is the solution to the equation? -9x = 45

-5

200

Last Friday Adam had $ 22.33. Over the week end he received some money for cleaning the attic. He now has $32. How much money did he receive. Write an equation to solve this word problem.

22.33 + x = 32

300

Which equation matches the word phrase below?

        Five less than a number is 10

x – 5 = 10

400

Solve: m + 4 = -12, m =

-16

500

Aaliyah had $24 to spend on seven pencils. After buying them she had $10. Which equation can be used to find how each pencil cost?

7x + 10 = 24