Steps-1

Title: Absolute values

Grade 6+ Lesson s1-l5

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 : \$- |( - 5) times 4 | times 3\$.

2

Step

Given expression is

\$- |( - 5) times 4 | times 3\$

3

Step

First, let’s simplify the expression inside the absolute value:

\$- |(- 5) times 4 | = - | - 20 | \$

4

Step

Then, since the absolute value of - 20 is 20, we have:

\$ - | - 20 | = - 20 \$

5

Step

Now, we multiply by 3:

\$ − 20 times 3 = - 60 \$

6

Solution

So, the simplified expression is -60.

7

Sumup

Please Summarize Problem, Hint, Clue, Formula and Steps

Choices

8

Choice-A

Option A states that the step is 30, but as we have just shown, the correct step is 60. This means option A is incorrect

Wrong 30

9

Choice-B

The error lies in applying the negative sign before evaluating the absolute value, resulting in - 40 incorrectly

Wrong -40

10

Choice-C

20 isn’t accurate; it lacks the negative sign, essential for a negative result in the original expression

Wrong 20

11

Choice-D

Correct; starting with - 5 times 4 gives - 20, absolute value yields 20, then multiply by 3 for - 60

Correct -60

12

Answer

Option

D

13

Sumup

Please Summarize Choices

Discussion: Steps1 Steps2 Steps3 Steps4 Steps5

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