Free Grade 3 Introducing Two-step Equations Lesson Plans
Free Grade 3 lesson plans for Introducing Two-step Equations: 12 real questions with a full answer key and worked solutions. An equation is a balance. Do the same thing to both sides until the letter is on its own, then check by substituting back.
Free
Core
30 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- UnderstandExplain introducing two-step equations
Explain introducing two-step equations accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate introducing two-step equations
Calculate introducing two-step equations accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare introducing two-step equations
Compare introducing two-step equations accurately in a familiar context.
Assessed by: Exit ticket of four short items
- EvaluateJustify introducing two-step equations
Justify introducing two-step equations 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 Introducing Two-step Equations works
An equation is a balance. Do the same thing to both sides until the letter is on its own, then check by substituting back.
12 practice questions
Easy to hard, 24 marks in total. Try them first, then open the answers.
- 1.Solve x + 6 = 11.[1]
- 2.Solve x + 13 = 13.[1]
- 3.Solve x + 6 = 16.[1]
- 4.Solve x + 13 = 17.[1]
- 5.Solve 4x + 7 = 51.[2]
- 6.Solve 9x + 18 = 108.[2]
- 7.Solve 5x + 2 = 47.[2]
- 8.Solve 5x + 16 = 41.[2]
- 9.Solve 4x + 19 = 3x + 28.[3]
- 10.Solve 7x + 9 = 6x + -1.[3]
- 11.Solve 8x + 5 = 1x + 54.[3]
- 12.Solve 5x + 20 = 4x + 13.[3]
Show answers and working
1. x = 5
Subtract 6 from both sides: x = 5. Check: 1 × 5 + 6 = 11.
2. x = 0
Subtract 13 from both sides: x = 0. Check: 1 × 0 + 13 = 13.
3. x = 10
Subtract 6 from both sides: x = 10. Check: 1 × 10 + 6 = 16.
4. x = 4
Subtract 13 from both sides: x = 4. Check: 1 × 4 + 13 = 17.
5. x = 11
Subtract 7 from both sides: 4x = 44. Divide by 4: x = 11. Check: 4 × 11 + 7 = 51.
6. x = 10
Subtract 18 from both sides: 9x = 90. Divide by 9: x = 10. Check: 9 × 10 + 18 = 108.
7. x = 9
Subtract 2 from both sides: 5x = 45. Divide by 5: x = 9. Check: 5 × 9 + 2 = 47.
8. x = 5
Subtract 16 from both sides: 5x = 25. Divide by 5: x = 5. Check: 5 × 5 + 16 = 41.
9. x = 9
Subtract 3x from both sides: 1x + 19 = 28. Subtract 19: 1x = 9. Divide by 1: x = 9.
10. x = -10
Subtract 6x from both sides: 1x + 9 = -1. Subtract 9: 1x = -10. Divide by 1: x = -10.
11. x = 7
Subtract 1x from both sides: 7x + 5 = 54. Subtract 5: 7x = 49. Divide by 7: x = 7.
12. x = -7
Subtract 4x from both sides: 1x + 20 = 13. Subtract 20: 1x = -7. Divide by 1: x = -7.
Worked examples
Solve x + 12 = 14.
- Subtract 12 from both sides: x = 2.
- Check: 1 × 2 + 12 = 14.
- Answer: x = 2
Solve 3x + 11 = -4.
- Subtract 11 from both sides: 3x = -15.
- Divide by 3: x = -5.
- Check: 3 × -5 + 11 = -4.
- Answer: x = -5
Solve 5x + 6 = 2x + 6.
- Subtract 2x from both sides: 3x + 6 = 6.
- Subtract 6: 3x = 0.
- Divide by 3: x = 0.
- Answer: x = 0
Interactive practice
Free, no account required — answer on screen or print it.
Common mistakes
What learners typically get wrong, and how to fix it.
Does an operation to only one side.
Correction: Keep the balance — both sides, every time.
Uses the wrong inverse (subtracts to undo multiplying).
Correction: Undo × with ÷ and + with −.
Teacher tips
- · Always ask pupils to substitute their answer back in.
Parent tips
- · 'I think of a number' puzzles at dinner.
Real-life applications
- · Working out an unknown price or time from a total.
Assessment objectives
How mastery is evidenced, and which standards it maps to.
Every free resource for Introducing Two-step Equations
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Frequently asked
- Is this Grade 3 Introducing Two-step Equations 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 One-step Equations. 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 Introducing Two-step Equations?
- Move on to Working with Two-step Equations, Two-step Equations in Context, One-step Equations, Equations with Brackets, which build directly on this idea.
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