Scientific Notation
When you write in scientific notation, you can only have ______ number to the left of the decimal.
One and that number needs to be greater than 1 and less than or equal to 10.
When you have a negative exponent, you move the decimal to the _______________.
left.
(3.2 X 103)(5.1 X 10-7) What do you do with the 3.2 and 5.1?
What is Multiply. 3.2 X 5.1 = 16.32
(9.3 times 10^9) / (3.1 times 10^4)
What do you do with the 9.3 and 3.1?
What is divide. 9.2/3.1 = 3
The speed of light is 3 x 108 meters/second. If the sun is 1.5x 1011 meters from earth, how many seconds does it take light to reach the earth? Will you add, subtract, multiply, or divide the scientific notation numbers?
What is multiply.
0.0000032
What is 3.2 X 10-6
When you have a positive exponent, you move the decimal to the _______________.
What is right.
(3.2 times 10^3)(5.1 times 10^-7)
What do you do with the exponents?
What is Add. 3 + -7 = -4
(9.3 times 10^9) / (3.1 times 10^4)
What do you do with the exponents?
What is Subtract. 9 - 4 = 5
The speed of light is 3 x 108 meters/second. If the sun is 1.5x 1011 meters from earth, how many seconds does it take light to reach the earth? Write answer in scientific notation.
What is 4.5 X 1019
0.004082
What is 4.082 x 10-3
9.0123 X 10-2
What is 0.090123
(2 times 10^3)(3 times 10^4)
Write in Scientific Notation
What is 6 X 107
(4.8 times 10^3) / (2 times 10^9)
Write in scientific notation.
What is 2.4 X 10-6
While looking through a microscope the cell is magnified 2.8 X 10-8 times. How small is the cell?
What is 0.000000028
770,000
What is 7.7 X 105
4.2 X 10-4
What is 0.00042
(1.2 times 10^-5)(4 times 10^8)
Write in standard notation
What is 4.8 X 103 => 4,800
(6.14 times 10^2) / (3.07 times 10^-8)
Write in scientific notation.
What is 2 X 1010 Note 2 - -8 = 10 is the same as 2 + 8 = 10 because of integer rules
The human eye blinks about 6.25 x 106 times each year. About how many times has the eye of a 14 year old blinked? Write answer in scientific notation.
What is 8.7 X 107
0.00000641
What is 6.41 X 10-6
8.256 X 105
What is 825,600
(4.2 times 10^5)(3.1 times 10^2)
Write in scientific notation.
What is not 13.02 X 107 but it should be 1.302 X 108
(5.4 times 10^3) / (2.7 times 10^4)
Write in scientific and standard notation.
What is 2 X 10-1 and 0.2
The US debt is approximately 13 trillion dollars. There are about 13 million people living in the US. How much could each person pay for the US to be debt free? Round your answer to the nearest tenth.
What is
(1.3 times 10^13) / (3.0 times 10^8)
Not 0.43 X 105 but it should be 4.3 X 104 or $43,000 per person.