22, 22, 55, 22, 22, 44, 121, 77, 77, 99, 22, 33, 110, 44, 55, 33, 99, 121, 22, 66, 77, 99, 88, 44, 110, 66, 126, 121, 44, 77, 77, 33, 33, 55, 88, 22, 77, 88, 121, 44, 121, 33, 66, 33, 110, 121, 66, 88, 55, 55.
Which number is the odd one out? Write down as many reasons as you can think of explaining why that number is the odd one out.
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126 is the odd one out. All of the other numbers are multiples of 11
Did you have a different reason?
Did you have a different answer?
Your teacher can decide if you are right or wrong.
Note to teacher: Click the button above to generate a new set of numbers. The numbers are chosen at random so some sets will be more appropriate to your class than others.
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Teacher, do your students have
access to computers? Do you have "Laptops in Lessons"? Whether your students each have a TabletPC or share a desktop PC, this activity lends itself to eLearning (Engaged Learning). |
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Here is the URL which will take them to a concise version of this page.
Here's the URL which will take
them to an activity supporting the recognition of multiples.