Free Grade 3 One-step Equations in Context Lesson Plans
Free Grade 3 lesson plans for One-step Equations in Context: 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
Higher
25 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- RememberIdentify one-step equations in context
Identify one-step equations in context accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain one-step equations in context
Explain one-step equations in context accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate one-step equations in context
Calculate one-step equations in context accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare one-step equations in context
Compare one-step equations in context 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 One-step Equations in Context 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 + 3 = 5.[1]
- 2.Solve x + 15 = 26.[1]
- 3.Solve x + 9 = 19.[1]
- 4.Solve x + 11 = 23.[1]
- 5.Solve 8x + 12 = 92.[2]
- 6.Solve 2x + 17 = 11.[2]
- 7.Solve 6x + 5 = 11.[2]
- 8.Solve 9x + 12 = 30.[2]
- 9.Solve 8x + 6 = 7x + 1.[3]
- 10.Solve 7x + 19 = 2x + -31.[3]
- 11.Solve 3x + 7 = 2x + -3.[3]
- 12.Solve 3x + 18 = 2x + 16.[3]
Show answers and working
1. x = 2
Subtract 3 from both sides: x = 2. Check: 1 × 2 + 3 = 5.
2. x = 11
Subtract 15 from both sides: x = 11. Check: 1 × 11 + 15 = 26.
3. x = 10
Subtract 9 from both sides: x = 10. Check: 1 × 10 + 9 = 19.
4. x = 12
Subtract 11 from both sides: x = 12. Check: 1 × 12 + 11 = 23.
5. x = 10
Subtract 12 from both sides: 8x = 80. Divide by 8: x = 10. Check: 8 × 10 + 12 = 92.
6. x = -3
Subtract 17 from both sides: 2x = -6. Divide by 2: x = -3. Check: 2 × -3 + 17 = 11.
7. x = 1
Subtract 5 from both sides: 6x = 6. Divide by 6: x = 1. Check: 6 × 1 + 5 = 11.
8. x = 2
Subtract 12 from both sides: 9x = 18. Divide by 9: x = 2. Check: 9 × 2 + 12 = 30.
9. x = -5
Subtract 7x from both sides: 1x + 6 = 1. Subtract 6: 1x = -5. Divide by 1: x = -5.
10. x = -10
Subtract 2x from both sides: 5x + 19 = -31. Subtract 19: 5x = -50. Divide by 5: x = -10.
11. x = -10
Subtract 2x from both sides: 1x + 7 = -3. Subtract 7: 1x = -10. Divide by 1: x = -10.
12. x = -2
Subtract 2x from both sides: 1x + 18 = 16. Subtract 18: 1x = -2. Divide by 1: x = -2.
Worked examples
Solve x + 11 = 17.
- Subtract 11 from both sides: x = 6.
- Check: 1 × 6 + 11 = 17.
- Answer: x = 6
Solve 3x + 10 = 22.
- Subtract 10 from both sides: 3x = 12.
- Divide by 3: x = 4.
- Check: 3 × 4 + 10 = 22.
- Answer: x = 4
Solve 6x + 12 = 1x + -13.
- Subtract 1x from both sides: 5x + 12 = -13.
- Subtract 12: 5x = -25.
- Divide by 5: x = -5.
- Answer: x = -5
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.
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Frequently asked
- Is this Grade 3 One-step Equations in Context 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 Working with One-step Equations, Introducing One-step Equations, Algebraic Expressions. 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 One-step Equations in Context?
- Move on to Two-step Equations, Equations with Brackets, Equations with Unknowns Both Sides, Forming Equations, which build directly on this idea.
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