Pre-Algebra Evaluating Expressions

BONUS:
20 - [4² ÷ (2 + 14)] + 5
-----------------------------
4² -13

• -1

• 8

• 8½

• -8

What is the first step in solving this problem:
-12 ÷ 6(-3) + 8

• multiplication

• addition

• division

• subtraction

Find and explain the error.    
 5 - 3 + 2
     5 - 5
        0

• There is no error.

• Addition was done first and you should have subtracted first

• There is a subtraction error

Evaluate the expression when b = 5
9 + b − (b−3)

• 6

• 12

• 11

• 7

Evaluate the expression for c = 3 and d = 5.
(2 + d)² − 3²

• 40

• 5

• 8

• 43

Evaluate the expression for c = 3 and d = 5.
cd² + 4

• 79

• 229

• 34

• 68

99 - [(3 + 5)² - (4² - 1)]

• 50

• 88

• 93

• 96

Which expression equals 9.

• (4 - 1) x (2 + 1)

• (3 x 4) - 1

• 12 - 9 x 3

• 7 x 2 - 6

Solve.
2 x [(15 + 6 ) ÷ (27 ÷ 9) + 17]

• 48

• 31

• 29

• 24

x = 22

what is: 2x

• 20

• 24

• -2

• 44