Think of a Number

Ten students each think of a number.
Can you work out what numbers they are thinking of?

Sean says 'If I double my number and add 3 the answer is 37'
Seth says 'If I multiply my number by 2 and add 3 the answer is 31'
Antonio says 'If I multiply my number by 3 and add 4 the answer is 16'
Richard says 'If I multiply my number by 3 and add 5 the answer is 41'
Miquel says 'If I multiply my number by 3 and subtract 2 the answer is 49'
Colin says 'If I multiply my number by 4 and add 5 the answer is 13'
Cody says 'If I add 4 to my number then divide the result by 2, the answer is 7'
Alejandro says 'If I add 6 to my number then multiply the result by 2, the answer is 30'
Caden says 'If I add 5 to my number then multiply the result by 3, the answer is 78'
Jacob says 'If I multiply my number by 3 and subtract 4 then multiply the result by 4, the answer is 4 less than 144'

 

 

Instructions
Try your best to answer the questions above. Type your answers into the boxes provided leaving no spaces. When you have finished click the "check" button. If you have any questions wrong, 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.

Transum.org

This web site contains hundreds of free mathematical activities for teachers and students. Click here to go to the main page which links to all of the resources available.

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