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Lesson Example Discussion Quiz: Class Homework

Step-2

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	Solve the expression: [ \$ {2 × ( 3 + 5 ) }^2 - 4 \$ ] × 5
2	Step	To solve the expression:	[ \$ {2 × ( 3 + 5 ) }^2 - 4 \$ ] × 5
3	Step	First, let’s solve what’s inside the parentheses	3 + 5 = 8
4	Step	Now, let’s solve the expression inside the square brackets	\$ 2 times 8 = 16 \$
5	Step	Now, we square 16	\$ 16^2 = 256 \$
6	Step	Subtract 4 from the squared result	256 - 4 = 252
7	Step	Now, let’s multiply this result by 5	\$ 252 times 5 = 1260 \$
8	Step	Therefore, the solved expression is 4.
9	Choice.A	This option suggests that the solved expression equals 1260	1260
10	Choice.B	This option indicates that the solved expression equals 1324. However, our correct simplification led us to the result of 1260, not 1324	1324
11	Choice.C	This option suggests that the solved expression equals 1460. But our correct simplification process resulted in 1260, not 1460	1460
12	Choice.D	This option implies that the solved expression equals 1220. However, this result is incorrect	1220
13	Answer	Option	A
14	Sumup	Can you summarize what you’ve understood in the above steps?

Step

Type

Explanation

Answer

Problem

Solve the expression:
[ \$ {2 × ( 3 + 5 ) }^2 - 4 \$ ] × 5

Step

To solve the expression:

[ \$ {2 × ( 3 + 5 ) }^2 - 4 \$ ] × 5

Step

First, let’s solve what’s inside the parentheses

3 + 5 = 8

Step

Now, let’s solve the expression inside the square brackets

\$ 2 times 8 = 16 \$

Step

Now, we square 16

\$ 16^2 = 256 \$

Step

Subtract 4 from the squared result

256 - 4 = 252

Step

Now, let’s multiply this result by 5

\$ 252 times 5 = 1260 \$

Step

Therefore, the solved expression is 4.

Choice.A

This option suggests that the solved expression equals 1260

1260

Choice.B

This option indicates that the solved expression equals 1324. However, our correct simplification led us to the result of 1260, not 1324

1324

Choice.C

This option suggests that the solved expression equals 1460. But our correct simplification process resulted in 1260, not 1460

1460

Choice.D

This option implies that the solved expression equals 1220. However, this result is incorrect

1220

Answer

Option

Sumup

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