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## 1-2 Exponents

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -

**1-2 Exponents**Exponent (power)- the number of times the base is used as a factor 53 = 5 5 5= 125 Base - The number used as a factor**Special Powers**Zero power - Any nonzero number raised to the zero power is always one (60 = 1) 80 = __________ 100 = __________ 2000 = _________ First power- Any number raised to the first power will always equal itself ( 81 = 8) 71 = __________ 91 = __________ 1001 = _________**Write the product using an exponent.**1.) 4 4 4 2.) b b b b b Write the power in words and as repeated multiplication. Then evaluate the power. 3.) 53 4.) 36 Evaluate the expression when x= 8 and x = 0.3 5.) x3 6.) x4**1-3 Solve this Problem**35- 20 5 23 + 8 =**Order of Operations**When we have many operations we must follow the correct order of operations. P (Please) Parentheses (grouping symbols) E (Excuse) Exponents M (My) Multiply and D (Dear) Divide LEFT TO RIGHT ORDER A (Aunt) Add and S(Sally) Subtract_ LEFT TO RIGHT ORDER**Another way to remember this is the mnemonic device**PEMDAS. 1.) 3 + 144 12 = 2.) 27 - 18 = 3.) (2 = 4.) 2(6+4) **5.) 72 + 2(8 1) 6.) 6 + 22 2 4 x 2**7.) [(10+2) 4]3 8.) (7 - 2)2 + 34**12 + 3**5 9.) 6 + 3 10.) 3 33 + 7 1 12.) 10 [ 9 – ( 2 2) ] 11.) 3 • 5 – 8 4 + 6