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Mixed Medians

Find the medians of sets of different types of numbers in these self-marking exercises.

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This is level 8: mixed units. You will be awarded a trophy if you get at least 7 answers correct and you do this activity online.

Find the median of each of these sets. Click S for help sorting.

1 S

3cm, 25mm, 42mm

2 S

250cm, 2.3m, 2.03m

3 S

50g, 500g, 4.3kg, 430g, 5kg

4 S

8km, 7.5km, 750m, 8500m, 7km

5 S

1266mg, 166g, 0.66kg, 6t, 66g

6 S

1002ml, 998ml, 1l, 1.002l, 0.998l

7 S

1h, 66min, 3600s, 62min, 1.1h, 60min, 61min

8 S

16in, 2ft, 25in, 18in

9 S

20oz, 18oz, 1lb, 2lb


This is Mixed Medians level 8. You can also try:
Level 1 Level 2 Level 3 Level 4 Level 5 Level 6 Level 7

10 Birds


Try your best to answer the questions above. Type your answers into the boxes provided leaving no spaces. As you work through the exercise regularly click the "check" button. If you have any wrong answers, do your best to do corrections but if there is anything you don't understand, please ask your teacher for help.

When you have got all of the questions correct you may want to print out this page and paste it into your exercise book. If you keep your work in an ePortfolio you could take a screen shot of your answers and paste that into your Maths file.

Why am I learning this?

Mathematicians are not the people who find Maths easy; they are the people who enjoy how mystifying, puzzling and hard it is. Are you a mathematician?

Comment recorded on the 11 January 'Starter of the Day' page by S Johnson, The King John School:

"We recently had an afternoon on accelerated learning.This linked really well and prompted a discussion about learning styles and short term memory."

Comment recorded on the 25 June 'Starter of the Day' page by Inger.kisby@herts and, :

"We all love your starters. It is so good to have such a collection. We use them for all age groups and abilities. Have particularly enjoyed KIM's game, as we have not used that for Mathematics before. Keep up the good work and thank you very much
Best wishes from Inger Kisby"

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Featured Activity

Nine Digits

Nine Digits

Arrange the given digits one to nine to make three numbers such that two of them add up to the third. This is a great puzzle for practicing standard pen and paper methods of three digit number addition and subtraction.


There are answers to this exercise but they are available in this space to teachers, tutors and parents who have logged in to their Transum subscription on this computer.

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Go Maths

Learning and understanding Mathematics, at every level, requires learner engagement. Mathematics is not a spectator sport. Sometimes traditional teaching fails to actively involve students. One way to address the problem is through the use of interactive activities and this web site provides many of those. The Go Maths page is an alphabetical list of free activities designed for students in Secondary/High school.

Maths Map

Are you looking for something specific? An exercise to supplement the topic you are studying at school at the moment perhaps. Navigate using our Maths Map to find exercises, puzzles and Maths lesson starters grouped by topic.


If you found this activity useful don't forget to record it in your scheme of work or learning management system. The short URL, ready to be copied and pasted, is as follows:

Alternatively, if you use Google Classroom, all you have to do is click on the green icon below in order to add this activity to one of your classes.

It may be worth remembering that if should go offline for whatever reason, there is a mirror site at that contains most of the resources that are available here on

When planning to use technology in your lesson always have a plan B!

Do you have any comments? It is always useful to receive feedback and helps make this free resource even more useful for those learning Mathematics anywhere in the world. Click here to enter your comments.


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10 Birds

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Description of Levels


Level 1 - Nice numbers

Level 2 - Large numbers

Level 3 - Decimals

Level 4 - Fractions

Level 5 - Multiples and factors

Level 6 - Squares and roots

Level 7 - Standard Form

Level 8 - Mixed Units

Averages and Range - Exercise on mean, median and range.

Exam Style Questions - A collection of problems in the style of GCSE or IB/A-level exam paper questions (worked solutions are available for Transum subscribers).

More on this topic including lesson Starters, visual aids, investigations and self-marking exercises.

Answers to this exercise are available lower down this page when you are logged in to your Transum account. If you don’t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.

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Curriculum Reference

See the National Curriculum page for links to related online activities and resources.


The video above is for the Averages exercise but there is an explanation of how to find the median at 3:04.

Don't wait until you have finished the exercise before you click on the 'Check' button. Click it often as you work through the questions to see if you are answering them correctly. You can double-click the 'Check' button to make it float at the bottom of your screen.

Answers to this exercise are available lower down this page when you are logged in to your Transum account. If you don’t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.

Log in Sign up

Typing Mathematical Notation

These exercises use MathQuill, a web formula editor designed to make typing Maths easy and beautiful. Watch the animation below to see how common mathematical notation can be created using your keyboard.

MathQuill Animation



Use this area to sort the numbers in order so that you can easily find the median.

3cm, 25mm, 42mm
250cm, 2.3m, 2.03m
50g, 500g, 4.3kg, 430g, 5kg
8km, 7.5km, 750m, 8500m, 7km
1266mg, 166g, 0.66kg, 6t, 66g
1002ml, 998ml, 1l, 1.002l, 0.998l
1h, 66min, 3600s, 62min, 1.1h, 60min, 61min
16in, 2ft, 25in, 18in
20oz, 18oz, 1lb, 2lb