# Cracked Clock Quiz

## A ten question mathematical quiz about the numbers on a standard clock face.

##### Cracked Clock QuizLarge ClockMore Time ActivitiesMore Puzzles

You can earn a trophy if you get at least 7 questions correct and you do this activity online.

 1. What do all of the numbers on a clock face add up to? Working: 2. If the clock face broke into two pieces and the total of the numbers on each piece was the same, what other number would be on the piece containing the 11, 12, 1 , 2 and 3? Working: 3. If the clock face broke into three pieces and the total of the numbers on each piece was the same, what would that total be? Working: 4. Could the clock face break into four pieces with the total of the numbers on each piece the same? Yes or no? Working: 5. Could the clock face break into five pieces with the total of the numbers on each piece the same? Yes or no? Working: 6. Could the clock face break into six pieces with the total of the numbers on each piece the same? Yes or no? Working: 7. What do all of the odd numbers on a clock face add up to? Working: 8. What do all of the even numbers on a clock face add up to? Working: 9. What do all of the prime numbers on a clock face add up to? Working: 10. One of the numbers dropped off a clock face. The total of the numbers left was greater than 71 and a prime number. Which number dropped off? Working:
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## Instructions

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.

## More Activities:

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 14 September 'Starter of the Day' page by Trish Bailey, Kingstone School:

"This is a great memory aid which could be used for formulae or key facts etc - in any subject area. The PICTURE is such an aid to remembering where each number or group of numbers is - my pupils love it!
Thanks"

Comment recorded on the 19 November 'Starter of the Day' page by Lesley Sewell, Ysgol Aberconwy, Wales:

"A Maths colleague introduced me to your web site and I love to use it. The questions are so varied I can use them with all of my classes, I even let year 13 have a go at some of them. I like being able to access Starters for the whole month so I can use favourites with classes I see at different times of the week. Thanks."

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#### Lemon Law

A fascinating digit changing challenge. Change the numbers on the apples so that the number on the lemon is the given total. Can you figure out, by understanding place value, how this works?

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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.

## Teachers

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:

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

Extension,

Saturday, August 5, 2023

"A dartboard breaks into two pieces. The sum of the numbers on one piece is twice the sum of the numbers on the other piece. Where was the break?

Don't forget Transum has a Digital Darts game you could play while thinking about the puzzle."

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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