Review 1.1 Evaluate when x = 8, y = 2, and z = 6 Find the product

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Presentation transcript:

Review 1.1 Evaluate when x = 8, y = 2, and z = 6 Find the product Evaluate x∙x∙x for

Objective: Use powers to describe repeated multiplication. Section 1.2 Objective: Use powers to describe repeated multiplication.

Vocabulary Power Base Exponent Exponent Base Power Factors Power Result of repeated multiplication of the same factor Can be written as a base and an exponent Base Number or variable used as a factor in repeated multiplication Exponent Number of times the base is used as a factor Exponent Base Power Factors Power

Vocabulary Product Factor Product Factors Answer to a multiplication problem. Factor A number that is multiplied by another to give a product. 7 x 8 = 56 Factors Product

Identify the Base Base is exactly what exponent is sitting on top of. base is the ( ) and everything in it. base is only the x

Read and Write Powers Power Words Value 41 4 to the first power 42 4 to the second power or 4 squared 43 4 to the third power or 4 cubed 44 4 to the fourth power 3b5 3 times b to the fifth power

Example 1 Write the product using an exponent

Your Turn Write the product using an exponent

Example 2 Evaluate x4 when x = 0.5

Your Turn Evaluate the expression when m = 3

Using Formulas Formula Area of a Square Volume of a Cube s s s s s Describes a relationship between quantities Area of a Square Volume of a Cube s s s s s

Units Area Volume Square Units Cubic Units Square inches in2 Square feet ft2 Square centimeters cm2 Square meters m2 Volume Cubic Units Cubic inches in3 Cubic feet ft3 Cubic centimeters cm3 Cubic meters m3

Example 3 Find the volume of a cube with side length 20 in. Find the area of a square with side length 9 m

Your turn Find the volume of a square with the given side length. 1.5 cm

How do you write the product using an exponent? Concept Check 1.2 How do you write the product using an exponent? Copy question then answer

Pre Alg. Classwork 1.2 Write the power in words and as repeated multiplication. Evaluate the expression when k = 6 A box has the shape of a cube with a side length of 14 in. Find the volume.

Pre Alg. Classwork 1.2 Write the power in words and as repeated multiplication. Evaluate the expression when k = 6 A box has the shape of a cube with a side length of 14 in. Find the volume.