150 likes | 208 Views
3-3. Before the Bell. Complete the Table. 3-3a. Today ’ s learning Target:. I can. Change numbers from scientific notation to standard form. How we normally write numbers!. 3-3A. Vocabulary. Scientific Notation. - a way of writing really big and really
E N D
3-3 Before the Bell Complete the Table.
3-3a Today’s learning Target: I can Change numbers from scientific notation to standard form How we normally write numbers!
3-3A Vocabulary Scientific Notation - a way of writing really big and really small numbers so they are easier to work with - there are 2 parts: The exponent tells you how to move the decimal. 3.4 x105 a decimal number smaller than 10, bigger than 1 multiplied by a power of base 10
3-3A How to Scientific Notation to Standard The exponent tells you how to move the decimal. 3.4 x105 positive = move right negative = move left Write the decimal and leave space 3.4 0 0 0 0 Move the decimal and fill in the zeros.
I’ll show you two: 3-3A An ordinary quarter contains about 9.77 x1022 atoms. 22 spaces right 9.77 x1022 The average size of an atom is about 3 x10-8 centimeter across. = 97,700,000,000,000,000,000,000 3.0 x10-8 8 spaces left = 0.00000003
You try it: 3-3A Write the number in standard notation. 1.35 105 Think: Move the decimal right 5 places. 1.35 135,000
Try another: 3-3A Write the number in standard notation. 5.09 108 Think: Move the decimal right 8 places. 5.09 509,000,000
How about this one? 3-3A Write the number in standard notation. 1.9 10–5 1.9 Think: Move the decimal left 5 places. 0.000019
You try this one: 3-3A Write the number in standard notation. 2.7 10–3 Think: Move the decimal left 3 places. 2.7 0.0027
3-3A Did you master today’s learning target? Prove it with a three question quiz.
Lesson Quiz 3-3A Write each number in standard notation. 1. 1.72 104 17,200 2. 6.9 10–3 0.0069 3. A human body contains about 5.6 106 microliters of blood. Write this number in standard notation. 5,600,000
Assignment 3-3A Lesson 3.3A Pg.103 #11 – 14, 21 – 32 all