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Math 8 Unit B: Scientific Notation
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Terms in this set (20)
Choice c
Choice D
8 X 10⁴
9,300,000
City B 670,000<680,000
7.3 X 10⁻³
.0391 move original decimal 2 places to the left
Choice A
Choice A
Add factors keep the base and exponent the same 7.3 X 10⁷
11.
Subtract the fctors keep the base and exponent the same 5.2 X 10⁶
12.
Multiply the factors keep the base and add the exponents 35 X 10⁻⁵ =3.5 X 10⁻⁴ ( make sure answer is in scientific notation!)
13.
Multiply the factors keep the base and add the exponents 25.37 X 10¹⁴=2.537 X 10¹⁵ ( make sure answer is in scientific notation!)
14.
Divide the factors keep the base and subtract the exponents 2.6 X 10⁻³ ( make sure answer is in scientific notation!)
15.
ESTIMATE 8 X 10⁸ ÷ 2 X 10⁶= 4 X 10² about 400 pounds of garbage!
16. Estimate
After getting the exponents the same, Subtract the factors keep the base and exponent the same
67 X 10⁵ - 3 x 10⁵= 64 X 10⁵
in scientific 6.4 x 10⁶
17.Tricky! Get exponents the same first!!!!
Subtract the fctors keep the base and exponent the same .24 X 10⁻⁶ =2.4 X 10⁻⁷
18.
Answer should be 9.5 X 10⁴ the friend had -4 as the exponent
19.
( 5.83 +4.23+3.94) X 10⁵= 14X 10⁵
In scientific 1.4 X 10⁶
21.
(7X 10²⁵) + ( 7 X 10²⁵) =14 x 10²⁵
in scientific 1.4 x 10²⁶
22.
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