2,3,5,7,11,13,17,19,23 and 29 (only 1 and itself go into the number.)
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are all prime numbers odd?
NO! because two is an even prime number.
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highest common factor?
write down the multiples of both numbers and circle the highest that is in both timestable.
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lowest common factor?
list all multiple of of the two number and find the lowest number that is in both timestable
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what are the first 10 square numbers?
1,4,9,16,25,36,49,64,81,100 (number 1-10 timesed by itself)
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adding fractions?
1.times the bottom numbers together 2.add the top numbers 3.simplify if necessary
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multiplying fractions?
1.multiply the top numbers together 2.multiply the bottom numbers together 3.simplify
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dividing fractions?
FLIPPING FUN!! 1.flip the second fraction 2.times the two fractions 3.simplify
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dividing whole numbers?
.
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expressing numbers as a product of prime factors?
1.split the numbers into factors 2.every time you get a prime circle it 3.keep going untill you cant go any further 4.write them out in order with a x inbertween
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rounding decimols to 1 decimol place?
the scond digit after the point is the decider. e.g. 13.72 =13.7
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