To find the prime factors, you must use a factor tree: Start at the top and split your number off into factors. Each time you get a prime number you ring it and finally end up with all the prime factors, which you can then arrange in order.
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Card 7
Front
LCM (Lowest Common Multiple) - Method: List the multiples of all the numbers. Find the smallest one that's in all the lists
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Card 8
Front
Fractions
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Card 9
Front
Fractions where the denominator has prime factors of only 2 or 5 will give terminating decimals.
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Card 10
Front
How to turn recurring decimals into fractions: 1) Indentify the repeating unit, which will now become the numerator. 2) The same number of numbers will be on the denominator, and they will all be 9s.
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Card 11
Front
Multiplying: multiply top and bottom separately.
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Card 12
Front
Adding, subtracting: once you have a common denominator, add/subtract along top.
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Card 13
Front
Finding a fraction of something: multiply the 'something' by the top of the fraction, then divide by the bottom.
