Math Quiz 1 Module 4 (content)

Evaluate the expression 100 - (3 + 2)2 × 4

0

If m = 8, how many solutions are there to the expression 7m?

1

Evaluate the expression 9 + (7 - 4)2 ÷ 3.

12

Which expression represents the number of pencils Sue has? Sue has 14 pencils, but gives some to her friends. Use x for the number of pencils Sue gives to her friends.

14 - x

Solve for w. Make sure to use scrap paper to show your work. ( 36 ÷ 3 )( 2 x 6 ) = w

144

Evaluate the expression 23 - x, if x = 8

15

There are 16 dominos in the center of the table to play a game. There are four players who are playing the game. Each player receives the same number of dominos. Which equation can be solved to find the number of dominos each player will receive? Use d for the number of dominos each player receives.

16 = 4 x d

Evaluate the expression x + 9, if x = 8.

17

Which expression represents the amount of money in Frank's account? Frank deposits $20 a week into his bank account for several weeks. Use the variable w for the number of weeks.

20w

Evaluate the expression 2 + 23 × 5 - 3.

39

Evaluate the expression 9x, if x = 5.

45

Evaluate the expression x - 7, if x = 12.

5

Which expression does not have a solution of 9, if w = 4?

5 - w

Add parentheses to the expression so that its value is 45: 5 × 4 + 8 - 3

5 × (4 + 8 - 3)

Which expression represents the number of stamps Debbie has collected? Debbie has 53 stamps in her collection but buys some more. Use s for the number of stamps Debbie buys.

53 + s

Which expression represents the number of roses Ben has planted? Ben plants 6 rows of roses, with the same number of roses in each row. Use the variable r for the number of roses in each row.

6r

Evaluate the expression 8 - 3 × 2 + 5.

7

Evaluate the expression 7x, if x = 11.

77

Evaluate the expression 21x, if x = 4.

84

Which expression has a solution of 27, if r = 3?

9r

Which expression has a solution of 54, if t = 6?

9t

What should be done first to simplify the expression? 7 - 4 × (3 + 3)2 + 5

Add 3 and 3.....do what is in the parenthesis first

What should be done so that the expression will have a value of 10? 12 - 2 + 22 ÷ 8

Add parentheses around 2 + 2.

What should be done first to evaluate the expression? 9 - 4 ÷ 5 + 3 × 6

Divide 4 by 5.....because if there are no parenthesis or exponents and there is both multiplication and division in a problem you solve from left to right

What is the Order of Operations?

PEMDAS (Parentheses Exponents Multiplication/Division Addition/Subtraction) OR Please Excuse My Dear Aunt Sally

_________________ are used to represent an unknown quantity in a mathematical expression.

Variables

When is subtraction always the first operation done in an expression?

When it is in parentheses in an expression.

If m = 8, how many solutions are there for the expression m - 8?

one

Which expression has a solution of 5, if r = 3?

r + 2

If both Division and multiplication are in a problem which do you do first?

you go from left to right