Free Grade 3 Introducing Percentage Decrease Essentials Lessons
Free Grade 3 lessons for Introducing Percentage Decrease Essentials: 12 real questions with a full answer key and worked solutions. Per cent means 'out of 100'. Find 10% by dividing by 10 or 1% by dividing by 100, then build up. For an increase or decrease, use a multiplier.
Free
Higher
30 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- RememberIdentify introducing percentage decrease essentials
Identify introducing percentage decrease essentials accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain introducing percentage decrease essentials
Explain introducing percentage decrease essentials accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate introducing percentage decrease essentials
Calculate introducing percentage decrease essentials accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare introducing percentage decrease essentials
Compare introducing percentage decrease essentials 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 Percentage Decrease Essentials works
Per cent means 'out of 100'. Find 10% by dividing by 10 or 1% by dividing by 100, then build up. For an increase or decrease, use a multiplier.
12 practice questions
Easy to hard, 24 marks in total. Try them first, then open the answers.
- 1.Find 50% of 780.[1]
- 2.Find 25% of 60.[1]
- 3.Find 10% of 460.[1]
- 4.Find 25% of 320.[1]
- 5.Find 5% of 580.[2]
- 6.Find 35% of 220.[2]
- 7.Find 60% of 60.[2]
- 8.Find 12.5% of 260.[2]
- 9.Decrease $780.00 by 20%.[3]
- 10.Increase $480.00 by 15%.[3]
- 11.Increase $540.00 by 5%.[3]
- 12.Decrease $300.00 by 40%.[3]
Show answers and working
1. 390
1% of 780 = 7.8. 50% = 7.8 × 50 = 390.
2. 15
1% of 60 = 0.6. 25% = 0.6 × 25 = 15.
3. 46
1% of 460 = 4.6. 10% = 4.6 × 10 = 46.
4. 80
1% of 320 = 3.2. 25% = 3.2 × 25 = 80.
5. 29
1% of 580 = 5.8. 5% = 5.8 × 5 = 29.
6. 77
1% of 220 = 2.2. 35% = 2.2 × 35 = 77.
7. 36
1% of 60 = 0.6. 60% = 0.6 × 60 = 36.
8. 32.5
1% of 260 = 2.6. 12.5% = 2.6 × 12.5 = 32.5.
9. $624.00
Multiplier: 1 − 0.2 = 0.8. 780 × 0.8 = 624.
10. $552.00
Multiplier: 1 + 0.15 = 1.15. 480 × 1.15 = 552.
11. $567.00
Multiplier: 1 + 0.05 = 1.05. 540 × 1.05 = 567.
12. $180.00
Multiplier: 1 − 0.4 = 0.6. 300 × 0.6 = 180.
Worked examples
Find 25% of 620.
- 1% of 620 = 6.2.
- 25% = 6.2 × 25 = 155.
- Answer: 155
Find 40% of 200.
- 1% of 200 = 2.
- 40% = 2 × 40 = 80.
- Answer: 80
Decrease $200.00 by 5%.
- Multiplier: 1 − 0.05 = 0.95.
- 200 × 0.95 = 190.
- Answer: $190.00
Interactive practice
Free, no account required — answer on screen or print it.
Common mistakes
What learners typically get wrong, and how to fix it.
Finds 10% and stops when asked for a 10% decrease.
Correction: Subtract the 10% from the original.
Thinks a 50% rise then 50% fall returns to the start.
Correction: The second percentage is of a different amount.
Teacher tips
- · Teach 10%, 5%, 1% building blocks before multipliers.
Parent tips
- · Work out the tip at a restaurant together.
Real-life applications
- · Sales, tips, tax and interest.
Assessment objectives
How mastery is evidenced, and which standards it maps to.
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Frequently asked
- Is this Grade 3 Introducing Percentage Decrease Essentials lesson really free?
- Yes. Every lessons 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 Percentage Increase. Each one has its own free lesson, worksheet and quiz.
- How is the lesson 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 Percentage Decrease Essentials?
- Move on to Introducing Percentage Decrease Techniques, Introducing Percentage Decrease Word Problems, Introducing Percentage Decrease Common Errors, Working with Percentage Decrease, which build directly on this idea.
Related resources
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