w arm -u p. p olynomials – d ay 4 s cientific n otation objective: to use scientific notation to...
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WARM-UP
234
1107
9
3
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POLYNOMIALS – DAY 4 SCIENTIFIC NOTATIONObjective: To use scientific notation to solve problems.
SCIENTIFIC NOTATION
Used when working with numbers that are so large or so small that they are difficult to read.
Restrictions1 < a < 10
n has to be an integer (no fraction or decimal)
na 10
COMPLETE THE TABLE
Number Movement of the Decimal Place
Scientific Notation
133,000,000,000
0.000165
4,706,000,000
0.00000000000036
EXAMPLE 1: WRITE EACH NUMBER IN SCIENTIFIC NOTATION
a.) 64,830,000,000,000
b.) 0.00000000089
EXAMPLE 2: WRITE EACH NUMBER IN DECIMAL FORM
a.) 6.47 x 109
b.) 7.83 x 10-7
MULTIPLYING IN SCIENTIFIC NOTATION
Example 3:
(2.5 x 103)(6.0 x 102)
DIVIDING IN SCIENTIFIC NOTATION
Example 4:
4
12
100.3
103.9
The slightly oval path of the earth around the sun causes it to be as much as 2.5 x 106 km further from the sun than its average distance away, 1.5 x 108 km. Find the ratio of the first number to the second number.
EXPANDED NOTATION
Writing numbers based on powers of 10.
8572 = 8000 + 500 + 70 + 2
=8 x 103 + 5 x 102 + 7 x 101 + 2 x 100
WRITE IN EXPANDED NOTATION
48,307
a.) 4 x 104 + 8 x 103 + 3 x 102 + 7 x 100
b.) 4 x 105 + 8 x 104 + 3 x 103 + 0 x 102 + 7 x 101
c.) 48 x 103 + 3 x 102 + 7 x 100
EXAMPLE 5: WRITE IN EXPANDED NOTATION
64.91
HOMEWORK – DAY 4
Pg. 339 #2, 4, 6, 16 – 22 even, 28, 30
HOMEWORK REVIEW
Evaluate. Write your answer in scientific notation.
38 103.7107.2
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