Question

Kristina’s work to simplify the expression 12 ÷ 3 + (7 – 5) + 32 • 6 is shown below. Did Kristina make a mistake? If so:

Part 1: Explain where she made her mistake.

Part 2: Simplify the expression correctly to tell what her answer should have been.

Expression: 12 ÷ 3 + (7 – 5) + 32 • 6

Step 1: 12 ÷ 3 + 2 + 32 • 6

Step 2: 12 ÷ 3 + 2 + 9 • 6

Step 3: 12 ÷ 3 + 11 • 6

Step 4: 4 + 11 • 6

Step 5: 4 + 66

Answer: 70
- Any takers ?;*

Answer 1

Where do you think she made her mistake?

Answer 2

12 ÷ 3 + (7 – 5) + 32 • 6
4+2+32• 6
38• 6


--yes she did make a mistake
lol , :) thanks for making me look deep into detail.

Answer 3

Expression: 12 ÷ 3 + (7 – 5) + 3^2 • 6

Step 1: 12 ÷ 3 + 2 + 3^2 • 6 ... correct

Step 2: 12 ÷ 3 + 2 + 9 • 6 ... correct

Step 3: 12 ÷ 3 + 11 • 6 ... NOT correct

You follow PEMDAS so you do multiplication first, then addition

Answer 4

step 3 *should* be

Step 3: 12 ÷ 3 + 2 + 54

Answer 5

okay thanks :)

Answer 6

yw