1.7-1.8 Review Jeopardy!

Vocabulary

100

A letter used to represent a number is called...

Variable

200

A combination of operations with variables and numbers is called...

Algebraic Expression

300

A statement written in the form "expression = expression" is called...

An equation!

400

The number for a variable that makes an equation true is called a...

Solution

500

Replacing a variable in an expression by a number, then finding the value of the expression is called...

Evaluating the expression

Order of Operations

100

5*9²

405

200

18 ÷ 2 + 7

16

300

19 - 2(3² - 2²)

9

400

(7 - 5)³ * [9² ÷ (2 + 7)]

72

500

(6 - 3)⁴ * [10² ÷ (3 + 17)] + 3

408

Writing Expressions

100

A number increased by 2

x + 2

200

The quotient 3 and a number

x ÷  3

300

10 less than a twice a number

2x - 10

400

Seven times the difference of a number and 2

7(x - 2)

500

The quotient of a number and 5 plus three times the sum of the same number and 1

x ÷ 5 + 3(x + 1)

Finding Solutions

100

Is 10 a solution of 7n=77?

NO!

200

Is 175 a solution to n - 25 = 150?

YES!

300

Is 14 a solution to 30 = 3(n - 3)?

NO!

400

Is 20 a solution to 5(n - 7) = 65?

YES!

500

What would a solution be to 3n - 8 = 28?

n is 12!

Evaluating Expressions

100

x=5, y=0, z=2

(y + z)²

4

200

x=5, y=0, z=2

x³ - 2z

121

300

x=5, y=0, z=2

3x - 4y + z³

23

400

x=5, y=0, z=2

(x - 2)³ + z² - 2y

31

500

x=5, y=0, z=2

2 * 5z² - 3(z - y + x)

19