Evaluating Expressions

Evaluating Expressions

5-27-21

Orders of Operations

PEMDAS

Multiple Choice

Which operation is performed SECOND?

(13 - 1) + 4

• addition +

• subtraction -

• multiplication X

Multiple Choice

What does the E in PEMDAS stand for?

• Exceptional
• Egg
• Exponent

Multiple Choice

Which operation would you do first?
2 · (15 - 2) ÷ 5

• Addition
• Subtraction
• Multiplication
• Division

Multiple Choice

What is the order of the steps for the following expression?
50- 16 x 2 ÷  (12-4)

• parentheses
  multiplication
  subtraction
  division
• parentheses
  multiplication
  division
  subtraction
• parentheses
  division
  multiplication
  subtraction
• parentheses
  subtraction
  multiplication
  division

Multiple Choice

PEMDAS only works if....

• You add then subtract
• You subtract then add
• add or subtract right to left
• add or subtract left to right

Multiple Choice

Which operation would you do first in the following equation?
10 - 4 ÷ 1 · 5

• Subtraction
• Division
• Multiplication
• Addition 

Multiple Choice

Evalute:

2³ ÷(5-1)

• 1.5
• 2
• 1

Multiple Choice

63  ÷  (4 + 5)

• 21
• 9
• 7
• 20.75

Multiple Choice

7 + 6 ÷ 2

• 10
• 6.5
• 6
• 19

Evaluating Expressions

• Step 1- REPLACE each letter in the expression with the given value

• Step 2- Perform the operations in the expression using the order of operations

Multiple Choice

Evaluate 4y  if       y = 3

• 7
• 12

Multiple Choice

Evaluate -2x if x = 10

• -8

• 20

• -20

Multiple Choice

Evaluate x + y + z + a - c when x=11, y = 3, z = 4, a = 14 and c=10?

• 22

• 32

• 2

• 17

Multiple Choice

What is 16y - u + 34x when x=2 u =14 and y = 3?

• 102

• 43

• 2

• 107

Multiple Choice

Evaluate bc + 5a

when a = 3, b = 4, and c = -6

• 9

• 38

• -38

• -9

Multiple Choice

What is the value of x?
3x + 4 when x = -2

• 10
• 2
• -2
• 4

Multiple Choice

If x = -7, what does -2⋅x equal?

• -9
• -14
• 5
• 14

Multiple Choice

Evaluate the expression.   Let g = 3    h = 9 
4h + 2g + 4

• 42
• 46
• 34
• 58

Multiple Choice

b² + 4
when b = 3

• 10
• 12
• 13
• 11

Multiple Choice

Evaluate when a = 15:
2(a - 5) + 2

• 22
• 27
• 14
• 7

Multiple Choice

Evaluate 2a + 4b 
if a = 10     and    b = 6

• 20
• 24
• 44
• 4