Variable Expressions Review

Finding Patterns

100

Find the rule for the following pattern: 

4, 7, 10, 13, 16

Add 3

200

Find the rule for the following pattern: 

20, 17, 14, 11, 8

Subtract 3

300

Find the rule for the following pattern: 

1, 3, 9, 27, 81

Multiply by 3

400

Find the rule for the following pattern: 

64, 32, 16, 8, 4

Divide by 2 (or multiply by 1/2)

500

Find the rule for the following pattern: 

4, 9, 19, 39, 79

Multiply by 2, add 1

Input Output Tables

100

Generate an input and an output for the following rule:

 x + 5

(input) + 5 = output

200

Generate an input and an output for the following rule: 

7 - 2x 

7 - 2(input) = output

300

Generate an input and an output for the following rule: 

2x + 1

2(input) + 1 = output

400

Generate an input and an output for the following rule: 

5x

5(input) = output

500

Generate an input and an output for the following rule: 

x/3 + 5

(input)/3 + 5 = output

Writing Algebraic Expressions

100

Express the following expression algebraically: 

Five less than a number

x-5

200

Express the following expression algebraically: 

Twice of a number 

2x

300

Express the following expression algebraically: 

One fifth of a number 

x/5

400

Express the following expression algebraically: 

Five less than the sum of six and a number

(x + 6) - 5

500

Express the following expression algebraically: 

Three times the sum of seven and a number. 

3(7 + x)

Real World Connections

100

Jess picked 4 more apples than James. James picked a apples. Write an expression to show how many apples Jess picked. 

a + 4

200

To make sure that every child gets the same amount of candy, Marnie splits c pieces of candy between 7 children. Write an expression to represent how many pieces each child will receive. 

c/7

300

I can drive 5 miles every hour. Write an expression to represent how many miles I can drive every h hour. 

5h

400

I have 24 books on my shelf. I loaned my friends b books. Write an expression to represent how many books I have left. 

24 - b

500

A fish tank starts with 25 inches of water, but it is leaking. It loses 3 inches of water every minute. Write an expression to represent how much water will be left in the tank after m minutes. 

25 - 3m

Vocab Vocab Vocab

100

Define the following term: 

Constant

A fixed or known value

200

What is the difference between an expression and an equation? 

An expression does not have an equals sign. 

300

Which of the following terms is the coefficient: 

8x + 7

400

Identify the constant, coefficient, and variable in the following expression: 

4 - 3x

Constant: 4

Coefficient: -3

Variable: x

500

John was asked to write an expression to represent the how much money spent for every gallon of gas someone bought. He wrote the following: 4.75x = y. 

Was John correct? 

Technically incorrect - he wrote an equation.