Multiples, Factors & Primes

Can you have a go at answering these questions in your book - leave a comment or come and see me in school if you're not sure what to do...

1) Write down five multiples of 14

2) Write down a multiple of 16 that you think no-one else in the class will write down

3) Is the number 89 prime?

4) Is 221 prime?

5) Can you list all the factors of 200? (use a factor clock)

6) Can you list all the factors of 78?

7) What is the lowest common multiple of 4 and 10?

8) What is the lowest common multiple of 6 and 27?

9) Find the prime factorisation of 400? (like 240 = 2 x 2 x 2 x 2 x 3 x 5)

10) Find the prime factorisation of 176?

Any problems let me know