Year 7 - Prime factorisation | Baamboozle - Baamboozle

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Use the factor tree to write 36 as a product of its prime factors. Give your answer in the form a × b × . . . and write the factors in ascending order.

2 × 2 × 3 × 3

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What is the missing prime factor

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thief

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gold

Win 50 points!

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fairy

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lifesaver

Give 10 points!

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Write 26 as a product of it's prime factors

13 x 2

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Is this correct? Explain

Yes - Every number can be broken down in to prime factors

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What are the first five square numbers?

1, 4, 9, 16, 25

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eraser

Reset score!

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gift

Win 15 points!

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rocket

Go to first place!

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baam

Lose 5 points!

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lifesaver

Give 5 points!

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fairy

Take points!

rocket

Go to first place!

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lifesaver

Give 25 points!

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Is this always, sometimes, or never a multiple of 4. Why?

Sometimes... when x=2, no as answer = 0

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Which number is a prime number?

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Which student is wrong?

Chantelle

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Which number has more than 1 prime factor

12 = 2, 3,

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Which factor of 18 is missing from the table?

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If you use the cards shown to write 132 as a product of its prime factors, which three cards will you have left over?

3,5,7

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Select the numbers that are prime factors of both 294 and 315

3,7

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5 is a factor of both 10 and 15. Which other number is a common factor of 10 and 15?

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