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Step-1

Title: Grouping Symbols

Grade: 6-a Lesson: S1-L6

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

Lesson Steps

Step	Type	Explanation	Answer
1	Problem	Simplify the expression: \${ \$ [ 5 − (3 + 1)] × 2 \$}^2 \$
2	Step	To simplify the expression	\${ \$ [ 5 − (3 + 1)] × 2 \$}^2 \$
3	Step	Let’s first work inside the innermost brackets	3 + 1 = 4
4	Step	So, the expression becomes	\${ \$ [ 5 − 4] × 2 \$}^2 \$ \${ \$ [ 1 ] × 2 \$}^2 \$ \${ \$ 2 \$}^2 \$
5	Step	Now, we square 2	\$ 2^2 = 4\$
6	Step	Therefore, the Simplified expression is 4.
7	Choice.A	This option is wrong because it suggests the result is 16, but the correct answer is 4	16
8	Choice.B	This option suggests the answer is 2, but that’s incorrect. The right answer is 4	2
9	Choice.C	This is the correct answer. The expression evaluates to 4	4
10	Choice.D	This option is incorrect. The expression does not equal 36; it equals 4	36
11	Answer	Option	C
12	Sumup	Can you summarize what you’ve understood in the above steps?

Step

Type

Explanation

Answer

Problem

Simplify the expression:
\${ \$ [ 5 − (3 + 1)] × 2 \$}^2 \$

Step

To simplify the expression

\${ \$ [ 5 − (3 + 1)] × 2 \$}^2 \$

Step

Let’s first work inside the innermost brackets

3 + 1 = 4

Step

So, the expression becomes

\${ \$ [ 5 − 4] × 2 \$}^2 \$

\${ \$ [ 1 ] × 2 \$}^2 \$

\${ \$ 2 \$}^2 \$

Step

Now, we square 2

\$ 2^2 = 4\$

Step

Therefore, the Simplified expression is 4.

Choice.A

This option is wrong because it suggests the result is 16, but the correct answer is 4

Choice.B

This option suggests the answer is 2, but that’s incorrect. The right answer is 4

Choice.C

This is the correct answer. The expression evaluates to 4

Choice.D

This option is incorrect. The expression does not equal 36; it equals 4

Answer

Option

Sumup

Can you summarize what you’ve understood in the above steps?