Athletics Maths
Athletics sprint times maths challenge
A child-friendly sports challenge using sprint times to practise decimals with real examples.
Quick answer
You can use athletics sprint times to learn about decimals by comparing how fast or slow runners are, and by working out how much time they finish apart.Learning outcome
By the end of this page, you will be able to compare and order decimal numbers using real athletics sprint times, and understand how small differences in time can make a big difference in a race. Success signs:- You can read and write decimal numbers like 10.2 seconds and 9.8 seconds
- You can compare two sprint times to see which is faster
- You can order sprint times from fastest to slowest
- You can explain why a 0.3 second difference can be very important in a race
Why this matters
In athletics, even tiny differences in time matter a lot. If one runner finishes 0.1 seconds faster than another, they win the race. Understanding decimals helps us compare these very small differences. You use decimals in many everyday situations, like when you're shopping and need to compare prices, or when you're cooking and need to measure ingredients. Learning to work with decimals now will help you in sports, science, and real life.How it works
Decimals in athletics sprint times show how many seconds it takes to finish a race. The numbers after the decimal point show parts of a second. For example:- 10.2 seconds means 10 full seconds and 2 tenths of a second
- 9.8 seconds means 9 full seconds and 8 tenths of a second
- Look at the whole number part first (the seconds before the decimal point)
- If they're the same, look at the decimal part (the tenths of a second)
- The smaller number is faster
Examples you can see
Let's look at some real sprint times from a school athletics day:| Runner | Time (seconds) |
|---|---|
| Alex | 12.5 |
| Bella | 11.8 |
| Charlie | 13.2 |
| Daisy | 11.3 |
- First, look at the whole number part: 11, 11, 12, 13
- Compare the decimal parts of 11.8 and 11.3:
- 11.3 is faster than 11.8 because 3 tenths is less than 8 tenths
- So the order is: 11.3, 11.8, 12.5, 13.2
Try it as a mini adventure
Adventure: The School Athletics Challenge You are the coach of a school athletics team. Your team has four runners, and you need to find out who came first, second, third, and fourth place based on their sprint times. Here are the times:- Runner A: 10.7 seconds
- Runner B: 11.2 seconds
- Runner C: 10.9 seconds
- Runner D: 11.5 seconds
- Order these times from fastest to slowest
- Write down who came in which place
- Calculate how much faster the first runner was than the last runner
- Fastest to slowest: ? seconds, ? seconds, ? seconds, ? seconds
- First place: Runner ?
- Second place: Runner ?
- Third place: Runner ?
- Fourth place: Runner ?
- Difference between first and last: ? seconds
Common mistakes
- Mistake: Thinking 10.8 is faster than 10.3 because 8 is bigger than 3
Why it happens: Children often think the bigger decimal number is always faster, not understanding that the decimal point separates whole seconds from parts of a second.
Fix: Remember that 10.3 means 10 seconds and 3 tenths, which is less than 10 seconds and 8 tenths. - Mistake: Adding extra zeros to make decimals the same length
Why it happens: Children sometimes add zeros after the decimal point to make it easier to compare, which can confuse them.
Fix: 10.3 is the same as 10.30, but you don't need to write the extra zero unless it helps you compare. - Mistake: Not lining up the decimal points when comparing
Why it happens: When writing numbers, children might not pay attention to the decimal point and make errors.
Fix: Always write the decimal point in the same place when comparing numbers.
Parent and carer guide
To help your child with athletics sprint times and decimals:- Use real-world examples like race times from TV or local events
- Practice ordering times using a stopwatch or timer
- Ask your child to explain how they know one time is faster than another
- Encourage them to use words like "faster", "slower", "shorter", and "longer"
- Make it fun by timing each other in races around the house
- Remember that small differences in decimals matter a lot in sports
- Use a number line to show how small differences in time look
- Draw a chart showing your child's own running times
- Play a game where you say a time and your child says who would be faster
Practice questions
- Which is faster: 9.4 seconds or 9.7 seconds?
- Order these times from fastest to slowest: 12.1, 11.9, 12.3, 11.6
- How much faster is 10.5 seconds than 11.2 seconds?
- Which of these is the slowest: 13.8, 13.2, 12.9, 13.5?
- Compare 8.9 seconds and 8.4 seconds. Who is faster?
- 9.4 seconds is faster (because 4 tenths is less than 7 tenths)
- Fastest to slowest: 11.6, 11.9, 12.1, 12.3
- 0.7 seconds faster (11.2 - 10.5 = 0.7)
- 13.8 is the slowest
- 8.4 seconds is faster (because 4 tenths is less than 9 tenths)
FAQ
What does a decimal in athletics time mean?
A decimal in athletics time shows parts of a second. For example, 10.2 seconds means 10 full seconds plus 2 tenths of a second.
Why do athletes care about such small differences?
In athletics, races are often decided by very small differences. A 0.1 second difference can mean the difference between winning and losing a race.
How can I practice decimals with sprint times at home?
You can time each other doing simple activities like running around the house, then compare the times. You can also look at times from local races or sports TV.
Can decimals be used for other sports?
Yes! Decimals are used in many sports for times, scores, distances, and weights. For example, swimming times, basketball scores, and track and field measurements all use decimals.
What if my child finds decimals confusing?
Start with simple examples using whole numbers first. Then introduce the decimal point as a way to show parts of a second. Use visual aids like number lines or real timers to help them see the difference.