Exponents 1.5.17.

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Presentation transcript:

Exponents 1.5.17

Thursday, January 5, 2017 LG: Exponents HW: Finish classwork Do Now: Jon says the answer to 1+3× 6+2 −7 is 25. Julie says the answer is 18. Who is correct? Explain.

Base - when a number is raised to a power, the number that is used as a factor is the base. Exponent - the number that indicates how many times the base is used as a factor. Exponential form - a number is in exponential form when it is written with a base and an exponent.

5 3 5 3 Five cubed Exponential Form Word Form Expanded Form 5×5×5 base Exponential Form 5 3 Word Form Five cubed Expanded Form 5×5×5 Standard Form 125 * Any number raised to the first power is itself. 5 1 = 5 * Any number raised to the zero power is always 1. 5 0 =1

The base of an expression can be any kind of number 𝟕 𝟐 Seven squared 49 ( 1 3 )⁵ one-third to the power of five 1 243 (0.2)³ Two-tenths cubed 0.8

Since 1906, the height of Mount Vesuvius in Italy has increased by about feet. How many feet is this?