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Published bySarah Gallegos Modified over 4 years ago

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Indices Learning objective: To understand the basic rules of indices - all To investigate powers of 0 and 1 - most To investigate negative powers - some You will require a scientific calculator and a pen.

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Investigation 2²x 2 4 ==2^ 3 x 3³==3^ 5² x 5³==5^ 4 5 x 4²==4^4^ 3³ x 3 3 ==3^3^ 4³÷ 4==4^4^ 2³÷ 2²==2^ 3³÷ 3³==3^3^ 4 5 ÷ 4³==4^ 7 8 ÷ 7³==7^ (2³)²==2^

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Rules of indices Multiplication x a * x b = x (a + b) Division x a ÷ x b = x (a-b) Powers (x a ) b = x (ab)

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Exercise 1)3³ x 3 4 = 2) 7 103 ÷ 7 101 = 3) (8³)² = 4) (2³ ÷ 2²) 5 =

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Further investigation What is x 0 ? What is x 1 ? Where x can be any number. What is the effect of negative powers?

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Further investigation

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Aim: How to write in Scientific Notation DO NOW: 1. WHAT DOES 10 5 MEAN? 2. WHAT IS THE VALUE OF 10 5. 3. USING YOUR CALCULATOR, CALCULATE 4.5 X 10 6.

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