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Title: Percentage Decrease

Grade: 1300-a Lesson: S4-L4

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

Lesson Steps

Step	Type	Explanation	Answer
1	Problem	Find 100 decreased by 5%.
2	Step	Firstly, the percent of fractional multiple	100 of 5%
3	Step	The percentage sign % means percent, equivalent to the fraction of \$1/100\$	\$100 \times (5/100)\$
4	Step	After simplification	\$(100\times5)/100\$ = \$5\$
5	Step	Subtract the result from Step 3 to the original value	\$ 100 - 5 \$ = \$95\$
6	SumUp	Can you summarize what you’ve understood in the above steps?
7	Choice.A	It is correct because it correctly reflects a 5% decrease from the original value of 100	95
8	Choice.B	This option is incorrect as it indicates a decrease of 10% instead of a 5% decrease	90
9	Choice.C	This is incorrect because it represents a 15% decrease, not a 5% decrease	85
10	Choice.D	This is incorrect because it represents a 20% decrease, not a 5% decrease	80
11	Answer	Option	A
12	SumUp	Can you summarize what you’ve understood in the above steps?

Step

Type

Explanation

Answer

Problem

Find 100 decreased by 5%.

Step

Firstly, the percent of fractional multiple

100 of 5%

Step

The percentage sign % means percent, equivalent to the fraction of \$1/100\$

\$100 \times (5/100)\$

Step

After simplification

\$(100\times5)/100\$ = \$5\$

Step

Subtract the result from Step 3 to the original value

\$ 100 - 5 \$ = \$95\$

SumUp

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

Choice.A

It is correct because it correctly reflects a 5% decrease from the original value of 100

Choice.B

This option is incorrect as it indicates a decrease of 10% instead of a 5% decrease

Choice.C

This is incorrect because it represents a 15% decrease, not a 5% decrease

Choice.D

This is incorrect because it represents a 20% decrease, not a 5% decrease

Answer

Option

SumUp

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