1. Lesson 46 Warm­Up:
1) 2/5 of the 30 students were girls. How many
boys were there?
2) Simplify: [3/5 ­ (­1/2)2 + 9/10]0
3) Simplify: (­4)(­8) (­2)
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4) Write 4/9 as a decimal and as a percent.
5) Find the mean: 98, 90, 102, 97, 113
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2. Lesson 46
­­FYI... To multiply numbers that are in scientific notation:
­­multiply the coefficients
­­multiply the powers of ten (add the exponents)
­­revise the answer so that it is in scientific notation
To divide numbers that are in scientific notation:
­­divide the coefficients
­­divide the powers of ten (subtract the exponents)
­­revise the answer so that it is in scientific notation
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3. Examples ­ Lesson 46:
Find each product.
A) (2.4 x 106)(2.0 x 105)
B) (4.0 x 105)(4.0 x 105)
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4. Find each quotient.
C) (3.6 x 1010)
(3.0 x 106)
D) (1.2 x 107)
(3.0 x 103)
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