Maths - Number
- Created by: SamBroadhead
- Created on: 16-01-17 19:35
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- Maths - Number
- Standard Form
- A x 10^n
- A is between 1 and 10.
- 'n' is the power of ten
- 'n' is the number of places the decimal place moves
- To multiply: separate numbers and powers, then multiply.
- To divide: convert into S.F, divide numbers and powers separately.
- + or - : powers the same, + or - front numbers, x by 10^n.
- Percentage Increase
- Use the length of time as the power in your multiplication.
- An increase is x1.n.
- A decrease is x0.n (n is 100 minus the value).
- Indices
- a^3 means axaxa (etc.)
- e.g: (5^3)^2 MULTIPLY the powers.
- To divide indices, SUBTRACT the powers.
- To multiply, ADD the powers.
- a^0 is ALWAYS 1.
- -ve indices rule: a^-n = 1/a^n
- When fractional, denominator is the root, and the numerator is the number it is raised to.
- Standard Form
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