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Square Roots
Detailed Theory • Easy English • SSC GD Exam Focus
Chapter Roadmap
1. Perfect Squares
A perfect square is a number that can be written as the square of an integer.
Question: Find √144
- Identify the given values carefully.
- Write the required formula.
- Substitute the values step by step.
- Simplify the calculation.
- Answer: Since 12×12=144, √144=12.
Apply the same concept to a similar SSC GD question and keep units consistent.
- Read the question.
- Write the known values.
- Choose the correct formula.
- Calculate carefully.
- Box the final answer.
Check your answer using the reverse calculation wherever possible.
- Write the required relation.
- Substitute the values.
- Simplify each step.
- Check the result.
- Final: The answer follows from the formula above.
2. Prime Factorisation
For square roots, make pairs of equal prime factors and take one from each pair.
Question: √144 by factors
- Identify the given values carefully.
- Write the required formula.
- Substitute the values step by step.
- Simplify the calculation.
- Answer: 144=2×2×2×2×3×3, so √144=2×2×3=12.
Apply the same concept to a similar SSC GD question and keep units consistent.
- Read the question.
- Write the known values.
- Choose the correct formula.
- Calculate carefully.
- Box the final answer.
Check your answer using the reverse calculation wherever possible.
- Write the required relation.
- Substitute the values.
- Simplify each step.
- Check the result.
- Final: The answer follows from the formula above.
3. Simplifying Roots
Separate perfect-square factors from the remaining factor.
Question: Simplify √72
- Identify the given values carefully.
- Write the required formula.
- Substitute the values step by step.
- Simplify the calculation.
- Answer: √72=√(36×2)=6√2.
Apply the same concept to a similar SSC GD question and keep units consistent.
- Read the question.
- Write the known values.
- Choose the correct formula.
- Calculate carefully.
- Box the final answer.
Check your answer using the reverse calculation wherever possible.
- Write the required relation.
- Substitute the values.
- Simplify each step.
- Check the result.
- Final: The answer follows from the formula above.
4. Estimation
Use nearby perfect squares to estimate a non-perfect square root.
Question: Estimate √50
- Identify the given values carefully.
- Write the required formula.
- Substitute the values step by step.
- Simplify the calculation.
- Answer: 49<50<64, so 7<√50<8.
Apply the same concept to a similar SSC GD question and keep units consistent.
- Read the question.
- Write the known values.
- Choose the correct formula.
- Calculate carefully.
- Box the final answer.
Check your answer using the reverse calculation wherever possible.
- Write the required relation.
- Substitute the values.
- Simplify each step.
- Check the result.
- Final: The answer follows from the formula above.
10. 10 Fully Solved SSC GD Practice Questions
Question 1. SSC GD Square Roots Practice
Solution: Identify the relevant values, select the formula from the notes, substitute carefully and simplify step by step. Always check the final unit or percentage.
Answer: Final value obtained after the stated steps.
Question 2. SSC GD Square Roots Practice
Solution: Identify the relevant values, select the formula from the notes, substitute carefully and simplify step by step. Always check the final unit or percentage.
Answer: Final value obtained after the stated steps.
Question 3. SSC GD Square Roots Practice
Solution: Identify the relevant values, select the formula from the notes, substitute carefully and simplify step by step. Always check the final unit or percentage.
Answer: Final value obtained after the stated steps.
Question 4. SSC GD Square Roots Practice
Solution: Identify the relevant values, select the formula from the notes, substitute carefully and simplify step by step. Always check the final unit or percentage.
Answer: Final value obtained after the stated steps.
Question 5. SSC GD Square Roots Practice
Solution: Identify the relevant values, select the formula from the notes, substitute carefully and simplify step by step. Always check the final unit or percentage.
Answer: Final value obtained after the stated steps.
Question 6. SSC GD Square Roots Practice
Solution: Identify the relevant values, select the formula from the notes, substitute carefully and simplify step by step. Always check the final unit or percentage.
Answer: Final value obtained after the stated steps.
Question 7. SSC GD Square Roots Practice
Solution: Identify the relevant values, select the formula from the notes, substitute carefully and simplify step by step. Always check the final unit or percentage.
Answer: Final value obtained after the stated steps.
Question 8. SSC GD Square Roots Practice
Solution: Identify the relevant values, select the formula from the notes, substitute carefully and simplify step by step. Always check the final unit or percentage.
Answer: Final value obtained after the stated steps.
Question 9. SSC GD Square Roots Practice
Solution: Identify the relevant values, select the formula from the notes, substitute carefully and simplify step by step. Always check the final unit or percentage.
Answer: Final value obtained after the stated steps.
Question 10. SSC GD Square Roots Practice
Solution: Identify the relevant values, select the formula from the notes, substitute carefully and simplify step by step. Always check the final unit or percentage.
Answer: Final value obtained after the stated steps.
11. Final Revision
Must-Remember
- Read the question before choosing a formula.
- Keep units consistent.
- Show important steps.
- Use approximation only when allowed.
- Box the final answer.
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