Do Now 9/9/09 Take out HW from last night. Text page 7-9, #12-48 multiples of 4 Text page 7-9, #12-48 multiples of 4 Copy HW in your planner. Text p , #14-32 evens & 36 Text p , #14-32 evens & 36 In your journal answer the following. If 26 = L. of the A. means 26 letters of the alphabet, how many of the following “equations” can you translate? If 26 = L. of the A. means 26 letters of the alphabet, how many of the following “equations” can you translate? 24 = H in a D. 90 = D. in a R.A. 18 = H. on the G.C. 8 = P. in the S.S = W. that a P. is W. Hours in a Day Degrees in a Right Angle Holes on the Golf Course Planets in the Solar System Words that a Picture is Worth
Homework Text p. 7-9, #12-52 multiples of 4 12). 9 16). 120 20). 6 24). 32 28). 18 32). 72m 36). s ÷ 3 40). a) t + i b) A: 70; B: 60; C: 80 c) 46 points 44). 6 48) 52). a) p + 3t b) Blanda: 1948, Lowery: 1711, Johnson: 1736; c) Lowery, Johnson, Blanda
Objective SWBAT use powers to describe repeated multiplication
POWER the result of repeated multiplication of the same factor 2 4 BASE EXPONENT shows the number of times the base is multiplied Section 1.2 “Powers and Exponents” the factor (number) that is being multiplied
POWER the result of repeated multiplication of the same factor 3 4 BASE EXPONENT Repeated Multiplication (Factors) Words three to the three to the fourth power
Write the product using an exponent. Then find the value. 1). 2 · 2 · 2 · 2 · 2 · 2 2). (0.2)(0.2)(0.2) SOLUTIONS
Evaluate the expression. 1. x 2 when x = 8 1. x 2 = 8 2 = 64 = (2.5)(2.5)(2.5) = k 3 = k 3 when k = 2.5 SOLUTIONS Use the button on your calculator for squares of numbers. Use the button on your calculator for all other powers. = 8 x 8 3. d when d = d = 6 55 = 6 x 6 x 6 x 6 x 6 = 7776
Guided Practice Text p. 12, #1-11 all Homework Text p , #14-32 evens & 36
24
WAR!!! Using your boards evaluate the powers as fast as possible. If your number is called … you are at WAR!