No Partner

Find pairs of numbers that add up to:

89

You can click on the pairs to hide them. When you have clicked on all the pairs the three numbers with no partner will remain.

463237685573213503768616218728248365392

Most of the numbers in the list above can be added to another number in the list to give a sum of 89 but three numbers do not have a partner. Can you find those three numbers and type them into the boxes below in order of size (smallest first)?

[Click on numbers above to hide them]

Correct Wrong Correct Wrong Correct Wrong

 

Find pairs of numbers that add up to:

48

If you make a mistake you can click on a hidden number to make it reappear. If you reload this page all of the numbers will change

25312114131523920402839333633512824546

Most of the numbers in the list above can be added to another number in the list to give a sum of 48 but three numbers do not have a partner. Can you find those three numbers and type them into the boxes below in order of size (smallest first)?

[Click on numbers above to hide them]

Correct Wrong Correct Wrong Correct Wrong

 

Find pairs of numbers that add up to:

82

Are there any quick ways of spotting the pairs? Could you start by just looking at the units digit of each of the numbers?

31201171333977345143591952621823494813569

Most of the numbers in the list above can be added to another number in the list to give a sum of 82 but three numbers do not have a partner. Can you find those three numbers and type them into the boxes below in order of size (smallest first)?

[Click on numbers above to hide them]

Correct Wrong Correct Wrong Correct Wrong

 

Find pairs of numbers that add up to:

80

You can feel pleased with yourself for completing this online exercise. Claim your Transum Trophy after checking your answers.

53972207637416260198565277115754324339

Most of the numbers in the list above can be added to another number in the list to give a sum of 80 but three numbers do not have a partner. Can you find those three numbers and type them into the boxes below in order of size (smallest first)?

[Click on numbers above to hide them]

Correct Wrong Correct Wrong Correct Wrong

 

 

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?

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Three Ways

Three Ways

Can you get to the target number by multiplying together four different one digit numbers? Can you do it in three different ways? There are nine levels to this online challenge and a virtual Transum Trophy available for each level.

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