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Maths revision (Arc length (corbettmaths video no. 58, Pi times the angle…
Maths revision
Arc length
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Pi times the angle over 360 degrees will give you the arc length. you will need to give your answer in terms of Pi if you are not in a calculator paper
example: 
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Decimal to fraction
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you use the place value of the last digit to use as a fraction with a denominator of 10, 100 ect. you then simpilify the fraction if possible
standard form
corbettmaths video no. 300, 303
standard form is shomn as a number rom 0 to 10 x 10 to the power of a number. to convert this number into normal numbers you take the first full number and add on the amount of power in zeros. if there is a decimal than you count this as one of the zeros.
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tree diagrams
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tree diagrams display all of the possible outcomes and can be used to calculate the likelyhood of a certain outcome.
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