Unit 1 Lesson 6. Do Now Add the following: 1.2/3 + 1/6 = 4/6 + 1/6 = 5/6 2.¾ - ½ = 3/ 4 - 2/4 = 1/4 3. 1/x + 1/y = 1y/xy + 1x/xy = y + x/xy.

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Presentation transcript:

Unit 1 Lesson 6

Do Now Add the following: 1.2/3 + 1/6 = 4/6 + 1/6 = 5/6 2.¾ - ½ = 3/ 4 - 2/4 = 1/4 3. 1/x + 1/y = 1y/xy + 1x/xy = y + x/xy

Quiz/Review

Objectives and HW Be able to convert from scientific notation to decimal form Be able to convert from decimal form to scientific notation Be able to calculate using scientific notation HW: Lesson 6

Scientific Notation 1.1 ≤ a ˂ 10; x = a X 10^n 2.Positive exponent  bigger number Negative exponent  smaller number 3. Decimal moves to the right  number gets bigger Decimal moves to the left  number gets smaller

Convert from scientific notation to decimal form: Ex X 10^3 Positive exp.; number will be bigger  move decimal to the right 3 spaces Ans:4500 Ex X 10^-4 Neg. exp.; number will be smaller  move decimal to the left 4 places Ans:.00056

Convert from decimal form to scientific notation Ex Number will be smaller; exp. will be positive  move decimal to the left 4 places Ans: 2.3 x10^4 Ex Number will be bigger; exp. will be neg  move decimal 3 places to the right Ans: 6.7 X 10^ -3

Calculating w/ Scientific Notation 1.Same bases, subtract exponents 2. Divide the number part of scientific notation Ex. (3.1 X 10^7)/(1.2 X 10^-3) Exponents: = = 10 Divide numbers: 3.1 / 1.2 = 2.6 Ans: 2.6 X 10^10

Begin HW- Lesson 6, p. 24 Use examples on p as reference as needed