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U NDERSTANDING E XPONENTS

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The exponent of a number shows you how many times the number is to be used in multiplication. (Another name for exponent is index or power)

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L ET ’ S T RY I T ! How About... 8 2 = 8 × 8 = 64 Or... 5 5 = 5 × 5 × 5 × 5 × 5 = 3,125

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P I C K T H E A N S W E R T H A T B E S T A N S W E R S T H E Q U E S T I O N Action Button1 Y OUR T URN : H OW CAN WE USE EXPONENTS TO EXPRESS 9 × 9 × 9 × 9? 9494 9494 9(4)

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W HAT E LSE C AN W E L EARN ?: Exponents can be very helpful when applying math. When we need to multiply a number by itself multiple times, we can just use exponents. It’s not only quicker to write, but it simplifies our math problems and answers.

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L ET ’ S C ONSIDER T HE V OLUME OF THIS C UBE : Cube Volume Formula: V=l(w)(h) So, we can use exponents to express the answer: V = 4(4)(4) = 4 3 4 4 4

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V = 3 2 + 9V = 9 3 V = 9 ( 3 2 ) Now You Try!! Click on the Expression that will best express the formula for the Shapes Volume: 3 3 9

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O OPS !!! T RY A GAIN !!

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Great Job!!

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Great Job!!

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The End Keep Learning

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Simplify 2 3 (9 – 3) 2. COURSE 2 LESSON 3-1 2 3 (9 – 3) 2 = 2 3 6 2 Do operations in parentheses. = 8 36Find the values of the powers. = 288Multiply. 3-1.

Simplify 2 3 (9 – 3) 2. COURSE 2 LESSON 3-1 2 3 (9 – 3) 2 = 2 3 6 2 Do operations in parentheses. = 8 36Find the values of the powers. = 288Multiply. 3-1.

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