Martial Arts Maths
Martial Arts personal bests maths challenge
A child-friendly sports challenge using personal bests to practise subtraction with real examples.
Quick answer
You can use subtraction to find out how much your martial arts personal best has improved by comparing your old score or time with your new one.Learning outcome
By the end of this page, you will be able to use subtraction to find the difference between your old martial arts personal best and your new personal best. Success signs:- You can subtract two numbers to find how much better you are
- You can use a number line or counting back to solve subtraction problems
- You can compare your martial arts scores and times
- You can explain how much your personal best has improved
Why this matters
Subtraction is used in many sports to track progress and improvement. In martial arts, it helps you see how much better you are than before. It's like keeping a record of your best times or scores. This skill helps you understand how much you've grown and can make you feel proud of your efforts. It also helps you set new goals for the future.How it works
To find how much your martial arts personal best has improved, you need to:- Find your old personal best score or time
- Find your new personal best score or time
- Subtract the old number from the new number
- Write down how much better you are
Examples you can see
Let's imagine you're learning karate. You want to track your improvement in punches per minute.- Old personal best: 40 punches per minute
- New personal best: 65 punches per minute
- Old personal best: 3 minutes to complete a routine
- New personal best: 2 minutes 30 seconds to complete a routine
- 3 minutes = 180 seconds
- 2 minutes 30 seconds = 150 seconds
Try it as a mini adventure
Martial Arts Improvement Challenge You are a martial arts student who wants to track your progress. You have been training for 6 months and want to see how much you've improved. Month 1: Your personal best was 25 kicks in 30 seconds Month 2: Your personal best was 30 kicks in 30 seconds Month 3: Your personal best was 35 kicks in 30 seconds Month 4: Your personal best was 40 kicks in 30 seconds Month 5: Your personal best was 45 kicks in 30 seconds Month 6: Your personal best was 50 kicks in 30 seconds Your challenge is to calculate how much you improved each month: Month 1 to Month 2: ? kicks Month 2 to Month 3: ? kicks Month 3 to Month 4: ? kicks Month 4 to Month 5: ? kicks Month 5 to Month 6: ? kicks Try to solve each subtraction problem and see how much you've improved each month!Common mistakes
- Mistake: Subtracting in the wrong order (new minus old instead of old minus new)
Why it happens: Children might think the bigger number is always first
Fix: Remember to always subtract your old best from your new best to see improvement - Mistake: Forgetting to convert units when comparing times
Why it happens: Children might not understand that 1 minute = 60 seconds
Fix: Always make sure both numbers are in the same units before subtracting - Mistake: Not writing down the answer clearly
Why it happens: Children might rush or not understand the question
Fix: Write down your subtraction problem and the answer clearly - Mistake: Thinking that if you get a bigger number, you've improved less
Why it happens: Confusion about what "improvement" means
Fix: Remember that improvement means getting better, so the difference should be positive
Parent and carer guide
Parents and carers can help by:- Encouraging children to track their own martial arts personal bests
- Using real examples from the child's own martial arts training
- Practicing subtraction with simple numbers first
- Helping children understand that subtraction shows improvement
- Using a chart or table to track progress over time
- Practicing converting units (like minutes to seconds) when needed
- Checking that the subtraction makes sense (the answer should be positive for improvement)
- Reinforcing that progress is always something to celebrate
- Using everyday situations to practice subtraction, like comparing scores in games
- Not pressuring children to improve quickly, but celebrating small steps
Practice questions
- Old best: 20 kicks per minute. New best: 25 kicks per minute. How much did you improve?
- Old best: 4 minutes to complete routine. New best: 3 minutes 30 seconds. How much did you improve?
- Old best: 15 punches in 30 seconds. New best: 20 punches in 30 seconds. How much did you improve?
- Old best: 30 kicks in 1 minute. New best: 35 kicks in 1 minute. How much did you improve?
- Old best: 2 minutes 45 seconds. New best: 2 minutes 15 seconds. How much did you improve?
- 25 - 20 = 5 kicks per minute
- 4 minutes = 240 seconds, 3 minutes 30 seconds = 210 seconds, 240 - 210 = 30 seconds
- 20 - 15 = 5 punches in 30 seconds
- 35 - 30 = 5 kicks in 1 minute
- 2 minutes 45 seconds = 165 seconds, 2 minutes 15 seconds = 135 seconds, 165 - 135 = 30 seconds
FAQ
What is a personal best?
A personal best is your own highest score or fastest time in a martial arts activity. It's the best you've ever done by yourself.
How do I track my martial arts personal bests?
You can write down your scores or times each time you practice. Keep a chart or notebook to see how you improve over time.
Why do we use subtraction to find improvement?
Subtraction shows the difference between two numbers. When you subtract your old best from your new best, you find out how much better you are.
Can I use this method for other sports?
Yes! You can use subtraction to track improvement in any sport or activity, like running, swimming, or even board games.
What if my score gets worse?
If your score gets worse, the subtraction will give you a negative number. This means you need to practice more to get better.