Expression and Equations

Find and explain the mistake.    
 5 - 3 + 2   = 5-5 = 0

• You did the subtraction wrong

• You did the addition first, but should have done the subtraction first.

• The additon is correct, but the subtraction is wrong.

• There is no mistake.

2 + (9² - 4)

• 16

• 77

• 79

4³ + 2 x 8

• 75

• 28

• 80

Evaluate the expression:
15f - 60  if f = 5

• 15

• 95

• 30

• -45

What would you solve first?
3 x 48 / (15 - 3)

• 3 x 48

• 48 / 15

• 15 - 3 

• 48-12

Evaluate the expression:
24/(4g)   if g = 2

• 12

• 3

• 0.57

• 57

(7 + 41) ÷ 2 – 15

• 19

• 9

• 25

• 3

Evaluate 3²

• 6

• 9

• 27

• 3

What does the ( E )in PEMDAS mean?

• experience

• exponents

• examples

• evidence

Solve the equation: 
x + 7 = 12

• x = 5

• x = 19

• x = -5

• x = 84