Expressions Review Jeopardy

Writing algebraic expressions

100

Write an expression for the product of 3 and w.

3w

200

Write an expression for w less than 15.

15 - w

300

Write an expression for the difference of twice p and 9.

 2p - 9

400

Write an expression for 9 times the difference of r and 8.

9(r-8)

500

Sophia goes to the movie with her friends. Her ticket costs $15 and the theatre charges $10 per snack. Write an expression that models the cost of Sophia's trip to the movies. (DOUBLE POINTS: What does the variable represent?)

10s + 15   

Where s represents the number of snacks Sophia buys.

Writing verbal expressions (sentences)

100

Write a verbal expression for x + 3. (Use sum, difference, quotient or product)

The sum of x and 3

200

Write a verbal expression for 2y. (Use quotient, sum, difference or product.)

The product of 2 and y

300

Write a verbal expression for 3m - 2.

The product of 3 and m minus 2

400

Write a verbal expression for x/5 + 10

The sum of x divided by five, and 10

500

Write a verbal expression for 3(q - 7).

 3 times the difference of q and 7.

Identifying Parts of an Expression

100

3n -5

Identify the variable.

n

200

2z + 9 

Identify the constant.

 9

300

3x + 12

State the coefficient

3

400

In the expression 7 + 9x, identify the constant, the coefficient, and the variable. 400 points each.

7 is the constant

9 is the coefficient

x is the variable

500

n

State the coefficient and the constant. 500 points each

Coefficient is 1

Constant is 0

1n+0

Evaluating Expressions

100

p + 9

Evaluate when p = 6. 

p + 9

=(6) + 9

=15

200

8 - g

Evaluate the expression when g is 3.

8 - g

=8 - (3)

=5

300

4w

Evaluate the expression when w is 5

4w

=4(5)

=20

400

w/4 + 9

Evaluate when w = 28

w/4 + 9

=(28)/4 + 9

=7+9

=16

500

30 - 3n

Evaluate the expression when n = 6

30 - 3n

=30 - 3(6)

=30 - 18

=12

Math Rules & Conventions

100

Is 3n = 12 an expression or an equation?

Equation because it has an equal sign

200

List the order of operations. Either write the words or the symbols. (We use an acronym to help us remember!)

Bonus points for circling any operations that are paired together (we solve them left to right).

Brackets ()

Exponents n²

Division ÷ or /

Multiplication x or *

Addition +

Subtraction -

300

6p

What operation is shown?

Multiplication

(A number and a letter means multiply together!)

400

What operation can be represented by a fraction?

Division

500

Sometimes you can switch the order of the terms in an expression and sometimes you can't (commutativity). Which operations are you NOT allowed to change the order for?

Subtraction and division