Pentadd Quiz  Level 2Find the five numbers which when added or multiplied together in pairs to produce the given totals. 
This is level 2; Your computer is thinking of five positive integers between 1 and 20. Can you work out what they are?
When the five numbers are added in pairs the totals are:
13, 16, 18, 19, 21, 22, 24, 25, 28, 30.
Type in your answers in order from smallest to largest.
This is Pentadd Quiz level 2. You can also try:
InstructionsTry 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. 



Transum.orgThis web site contains over a thousand free mathematical activities for teachers and pupils. Click here to go to the main page which links to all of the resources available. Please contact me if you have any suggestions or questions. 
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Go MathsLearning 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 MapAre 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. TeachersIf 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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Level 1  Positive integers between 1 and 10
Level 2  Positive integers between 1 and 20
Level 3  Positive integers between 1 and 50
Level 4  Positive integers between 1 and 100
Level 5  Integers between 9 and 9
Level 6  Integers between 99 and 99
Level 7  Whole numbers and halves
Level 8  Decimals
Level 9  Positive integers between 1 and 10 and products are calculated
Level 10  Positive integers between 1 and 100 and products are calculated