Steps-3

Title: Order of Operations

Grade 6+ Lesson s1-l7

Explanation: Hello Students, time to practice and review the steps for the problem.

Quiz: Discussion Step

Discussion: Steps1 Steps2 Steps3 Steps4 Steps5

Id Type Name Note

1

Problem

Simplify the expression:
\$ 4^2 + 6 \div 2 times 3 − 5 \$

2

Step

The given expression

\$ 4^2 + 6 \div 2 times 3 − 5 \$

3

Hint

To evaluate the expression, let’s follow the PEMDAS rule:

Parentheses
Exponents
Multiplication and Division (from left to right)
Addition and Subtraction (from left to right)

4

Step

First, calculate the exponent

\$ 4^2 = 16 \$

\$ 16 + 6 \div 2 times 3 − 5 \$

5

Step

Now, perform the division

\$ 6 \div 2 = 3 \$

\$ 16 + 3 times 3 − 5 \$

6

Step

Next, perform the multiplication

\$ 3 times 3 = 9\$

16 + 9 − 5

7

Step

Finally, add and subtract from left to right:

16 + 9 = 25

25 − 5 = 20

8

Solution

So, the value of the expression is 20.

9

Sumup

Please Summarize Problem, Hint, Clue, Formula and Steps

Choices

10

Choice-A

This result is not correct because only one part of the expression was evaluated

Wrong 10

11

Choice-B

Mismatched expression; could be due to incorrect addition of 16 from \$4^2\$ to the result of 6 ÷ 2 × 3 − 5

Wrong 12

12

Choice-C

Incorrect calculation due to incorrect order of operations

Wrong 25

13

Choice-D

This matches the calculated result of the expression, so it’s the correct step

Correct 20

14

Answer

Option

D

15

Sumup

Please Summarize Choices

Discussion: Steps1 Steps2 Steps3 Steps4 Steps5

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