Successive percentage changes (+x% then -x%, length and width): net change

This type of question, asked 3 times: 19 Sep 2025 S3, 23 Sep 2025 S3, 24 Sep 2025 S3. All 3 questions below, oldest first.

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Question 1
19 Sep 2025 S3
6 $A number is increased by 20% and then decreased by 20%. What is the net change in the number?$
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Question 2
23 Sep 2025 S3
16 $The price of an item first increases by 20% and then decreases by 20% from the new price. What is the net percentage change in the original price of the item?$
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Question 3
24 Sep 2025 S3
21 $The length of a rectangle is increased by 10%, and its width is decreased by 10%. What is the net percentage change in the area of the rectangle?$
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Question 1