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Which Operation?

Decide which mathematical operation is required then use it to find the answers.

  Menu   Level 1 Level 2 Multi-step Problems More Arithmetic
No calculator

This is level 1: problems involving numbers generally up to 12. You may not need all of the information given in the question. You can earn a trophy if you get at least 7 questions correct and you do this activity online.

1) After his birthday party Nathaniel had 7 milk chocolates and 10 plain chocolates left out of 3 boxes. How many chocolates did Nathaniel have altogether?

Correct Wrong

2) Nevaeh went for a 10km walk on her 12th birthday but she quickly became tired and travelled the last 1km by bus. How many kilometers did Nevaeh actually walk?

Correct Wrong

3) In a shop there are 12 vases arranged on 3 shelves. In each vase there were 3 flowers. How many flowers were there altogether?

Correct Wrong

4) Nicole likes to have 3 oranges squeezed to make orange juice every morning. It takes 11 minutes to do the squeezing. How many oranges does Nicole use in a whole week?

Correct Wrong

5) In a class of twenty four pupils there are six friends who have been given a box of eighteen crayons to share equally between themselves. How many crayons will each of the friends receive?

Correct Wrong

6) Olivia is 10 years old. She is six years older than her brother and seven years older than her sister. How old is Olivia's brother?

Correct Wrong

7) Owen scored 5 points in the first round of the quiz. He then scored 10 points in the second round and 8 points in the third round. What was the total number of points Owen scored in all three rounds?

Correct Wrong

8) This week sixty six cakes were set out in rows of 11 on a shop counter. Last week they were set out in rows of 22. How many rows were there this week?

Correct Wrong

9) Rachel measured the heights of the three trees in her garden. The heights were 4m, 5m and 11m. What was the difference in heights of the tallest tree and the shortest tree?

Correct Wrong

10) Rebecca multiplies one of the numbers in the list below by another number in the list. The answer she got was also a number in the list. What product did Rebecca get?


Correct Wrong

This is Which Operation? level 1. You can also try:
Level 2


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 1 May 'Starter of the Day' page by Phil Anthony, Head of Maths, Stourport High School:

"What a brilliant website. We have just started to use the 'starter-of-the-day' in our yr9 lessons to try them out before we change from a high school to a secondary school in September. This is one of the best resources on-line we have found. The kids and staff love it. Well done an thank you very much for making my maths lessons more interesting and fun."

Comment recorded on the 1 February 'Starter of the Day' page by M Chant, Chase Lane School Harwich:

"My year five children look forward to their daily challenge and enjoy the problems as much as I do. A great resource - thanks a million."

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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!

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Description of Levels



Level 1 - Problems involving numbers generally up to 12

Level 2 - Problems involving numbers generally up to 100

Multi-step Problems - Solve multi-step problems in contexts, deciding which operations and methods to use and why.

More Arithmetic 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.


Vocabulary for Arithmetic

You may also want to use a calculator to check your working. See Calculator Workout skill ##.

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