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12 cards from this deck
Find what one part of the ratio represents
Work out the total number of parts in the ratio
Divide the quantity by the total number of parts
Multiply your answer by each part of the ratio
...the first number in the ratio
Ensure all parts add up to the original total
...how many parts represent that difference
Calculators not permitted in certain exam papers
Work systematically through the steps
101010 (3+5+23+5+23+5+2)
Work systematically through the three-step method
Strong mental arithmetic and systematic approaches
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