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What are the prime numbers over 50?
Work It Out By Drawing A Grid, Eliminate the 2 Times Tables, Then 3, Then 5, Then 7, Then 11, Then 13, And All The Primes, And Your Be Left With The Higher Prime Numbers :D
Is 204 in the 3 times tables?
yes 68 x 3 = 24 + 180 = 204
What numbers go into 27 and 30?
1 and 3. These are the only whole numbers to go into both 27 and 30.
How do you find a LCM?
say if you had to find the LCM of 4 and 3 you can go up in the 4 times table or the 3 times table (4times table will be quicker because it's a bigger number) 4 times table= 4, 8, 12, 16, 20, 24, 28 3 times table= 3, 6, 9, 12, 15, 18, 21 find the number that is in both times tables (has to be the LOWEST common number) in this case is 12 because it is in both lists. Once your able to do this, you'll get use to the idea and you can think of other ways to do it, but this way is good for people that have just started. It would be easier if you know all of your times tables up to 10.
What prime numbers can be multiplied together to equal 18?
3 times 3 times 2 equals 18
