×100: Error Analysis & Misconceptions
Mathematics
Grade 7
13 questions
~26 mins
1 views0 downloads
About This Worksheet
A worksheet focused on understanding and correctly applying ×100 when converting decimals to percentages, including error analysis and misconceptions for Grade 7 students.
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×100: Error Analysis & Misconceptions
Subject: MathematicsGrade: Grade 7
Name:
Date:
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Untitled Worksheet
Grade Grade 7
A
Fluency & Practice
Answer all questions. Show your working in the grid spaces provided.
1.
Calculate 0.75 × 100.
[2 marks]2.
Calculate 0.034 × 100.
[2 marks]3.
Calculate 1.2 × 100.
[2 marks]4.
Calculate 0.005 × 100.
[2 marks]B
Problem Solving & Reasoning
Answer all questions with detailed working.
1.
A decimal number 0.23 is multiplied by 100 to convert it into a percentage. Explain why multiplying by 100 gives the correct percentage value.
[4 marks]2.
A student mistakenly multiplies 0.6 by 10 instead of 100. What is the incorrect percentage they obtain, and why is it wrong?
[3 marks]C
Error Analysis & Misconceptions
Identify and correct the mistake in each example.
1.
A student calculates 0.45 × 100 = 4.5. Is this correct? If not, what mistake did they make?
[1 mark]AYes, it is correct.
BNo; they divided instead of multiplying.
CNo; they forgot to move the decimal two places.
2.
A student states, 'Multiplying 0.007 by 100 gives 0.7.' Is this correct? Explain.
[3 marks]D
Mixed Review
Answer the following questions to review your understanding of ×100.
1.
Express 0.125 as a percentage by multiplying it by 100.
[2 marks]2.
A decimal 0.9 is converted to a percentage. Write the calculation and the answer.
[3 marks]3.
Convert 0.005 to a percentage without multiplying. Explain your method.
[3 marks]E
Challenge & Extension
Attempt these challenging questions for further practice.
1.
A number is 0.00345. Multiply it by 100 to find its percentage. What is the result? Explain the steps.
[3 marks]2.
An error is made when converting 0.8 to a percentage by multiplying by 10 instead of 100. What incorrect value is obtained, and what is the correct percentage?
[4 marks]Quick Actions
What is Remix?
Create a new worksheet based on this one. Change the grade level, topic, number of questions, or difficulty - then generate a fresh version.
- • Change grade level (Grade 6 → Grade 7)
- • Swap topics (Harry Potter → Macbeth)
- • Add more questions (10 → 15)
- • Adjust difficulty
Details
- Created
- 1/1/2026
- Updated
- 1/1/2026
- Type
- worksheet