- Exponential notation is a powerful way to express repeated multiplication of the same number.
- Specifically, powers of 10 express very large and very small numbers in a manner which is convenient to read, write and compare.
- For any non-zero integer a, a–m 1 m a =
- Laws of exponents are

- (a) am × an = am+n
- (b) am ÷ an = am–n
- (c) (am) n = amn
- (d) am × bm = (ab) m
- (e) a° = 1, where a ≠ 0
- (f) m m m a a b b

- Numbers can be expressed in expanded form by using exponents.
- Very large and very small numbers can be expressed in standard form.
- Standard form is also called scientific notation form

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