Free Grade 3 Working with Square Roots Lesson Plans
Free Grade 3 lesson plans for Working with Square Roots: 12 real questions with a full answer key and worked solutions. A power tells you how many times to multiply a number by itself. A square root undoes squaring. When multiplying powers of the same base, add the indices.
Free
Foundation
30 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- RememberIdentify working with square roots
Identify working with square roots accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain working with square roots
Explain working with square roots accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate working with square roots
Calculate working with square roots accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare working with square roots
Compare working with square roots accurately in a familiar context.
Assessed by: Exit ticket of four short items
Prerequisites
Close these gaps first — each has its own free lesson, worksheet and quiz.
How Working with Square Roots works
A power tells you how many times to multiply a number by itself. A square root undoes squaring. When multiplying powers of the same base, add the indices.
12 practice questions
Easy to hard, 24 marks in total. Try them first, then open the answers.
- 1.Work out 10² and √100.[1]
- 2.Work out 12² and √144.[1]
- 3.Work out 3² and √9.[1]
- 4.Work out 5² and √25.[1]
- 5.Evaluate 5^4.[2]
- 6.Evaluate 4^3.[2]
- 7.Evaluate 2^3.[2]
- 8.Evaluate 2^4.[2]
- 9.Simplify x^7 × x^5 ÷ x^3.[3]
- 10.Simplify x^3 × x^6 ÷ x^6.[3]
- 11.Simplify x^4 × x^5 ÷ x^5.[3]
- 12.Simplify x^3 × x^7 ÷ x^4.[3]
Show answers and working
1. 100 and 10
10² = 10 × 10 = 100 √100 = 10 because 10 × 10 = 100
2. 144 and 12
12² = 12 × 12 = 144 √144 = 12 because 12 × 12 = 144
3. 9 and 3
3² = 3 × 3 = 9 √9 = 3 because 3 × 3 = 9
4. 25 and 5
5² = 5 × 5 = 25 √25 = 5 because 5 × 5 = 25
5. 625
Multiply 5 by itself 4 times. 5 × 5 × 5 × 5 = 625
6. 64
Multiply 4 by itself 3 times. 4 × 4 × 4 = 64
7. 8
Multiply 2 by itself 3 times. 2 × 2 × 2 = 8
8. 16
Multiply 2 by itself 4 times. 2 × 2 × 2 × 2 = 16
9. x^9
Multiplying: add the powers → x^12. Dividing: subtract the powers → x^12 ÷ x^3 = x^9.
10. x^3
Multiplying: add the powers → x^9. Dividing: subtract the powers → x^9 ÷ x^6 = x^3.
11. x^4
Multiplying: add the powers → x^9. Dividing: subtract the powers → x^9 ÷ x^5 = x^4.
12. x^6
Multiplying: add the powers → x^10. Dividing: subtract the powers → x^10 ÷ x^4 = x^6.
Worked examples
Work out 2² and √4.
- 2² = 2 × 2 = 4
- √4 = 2 because 2 × 2 = 4
- Answer: 4 and 2
Evaluate 5^3.
- Multiply 5 by itself 3 times.
- 5 × 5 × 5 = 125
- Answer: 125
Simplify x^6 × x^3 ÷ x^3.
- Multiplying: add the powers → x^9.
- Dividing: subtract the powers → x^9 ÷ x^3 = x^6.
- Answer: x^6
Interactive practice
Free, no account required — answer on screen or print it.
Common mistakes
What learners typically get wrong, and how to fix it.
Works out 3² as 6.
Correction: 3² means 3 × 3, not 3 × 2.
Multiplies indices when multiplying powers.
Correction: x³ × x⁴ = x⁷ — add, don't multiply.
Teacher tips
- · Write powers out in full before using index laws.
Parent tips
- · Spot square numbers on tiles or a chessboard.
Real-life applications
- · Area in square units, computer storage (powers of 2).
Assessment objectives
How mastery is evidenced, and which standards it maps to.
Every free resource for Working with Square Roots
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Frequently asked
- Is this Grade 3 Working with Square Roots lesson plan really free?
- Yes. Every lesson plans on FreeMathWorksheet is free to use, print and share — no account, no paywall and no watermark.
- What should a learner already know before this?
- Start with Introducing Square Roots, Cubes. Each one has its own free lesson, worksheet and quiz.
- How is the lesson plan sequenced?
- Recognition first, then understanding, application, reasoning and finally mastery — the same ladder used across every free resource on the platform.
- What comes next after Working with Square Roots?
- Move on to Square Roots in Context, Squares, Cubes, Index Laws, which build directly on this idea.
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