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MASAD

For each pair of numbers subtract the sum from the product then divide the result by 20.

Level 1 Level 2 Level 3 Description Help More Arithmetic

This is level 1; Numbers between 1 and 40. You can earn a trophy if you get at least 9 correct. You should not use a calculator for this exercise.

2, 7

Correct Wrong

4, 4

Correct Wrong

7, 10

Correct Wrong

9, 13

Correct Wrong

10, 13

Correct Wrong

13, 13

Correct Wrong

15, 18

Correct Wrong

18, 21

Correct Wrong

20, 24

Correct Wrong

23, 24

Correct Wrong

26, 31

Correct Wrong

29, 33

Correct Wrong

Check

This is MASAD level 1. You can also try:
Level 2 Level 3

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.

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 24 May 'Starter of the Day' page by Ruth Seward, Hagley Park Sports College:

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Comment recorded on the 26 March 'Starter of the Day' page by Julie Reakes, The English College, Dubai:

"It's great to have a starter that's timed and focuses the attention of everyone fully. I told them in advance I would do 10 then record their percentages."

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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.

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Description of Levels

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Level 1 - Numbers between 1 and 40

Level 2 - Numbers over 30

Level 3 - Numbers over 60

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.

Example

The sum of two numbers is the total you get when you add the numbers together.

The product of two numbers is the total you get when you multiply the numbers together.

Subtract means take away!

Dividing by twenty is a lot to ask,

But an easier method will help you.

Dividing by ten is a much easier task,

Then divide your answer by two!

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.

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