Scientific Notation
When you write in scientific notation, you can only have ______ number to the left of the decimal.
What is one. _____.__________________ X 10 ^?
When you have a negative exponent, you move the decimal to the _______________.
What is left.
(3.2 X 103)(5.1 X 10-7)
What do you do with the 3.2 and 5.1?
Multiply 3.2 x 5.1=16.32
(9.3 X 109) / (3.1 X 104)
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 105 km/second. If the sun is 1.5 x 108 km from earth, how many seconds does it take light to reach the earth?
Will you add, subtract, multiply, or divide the scientific notation numbers?
(Hint: distance = rate x time)
What is divide.
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 X 103)(5.1 X 10-7)
What do you do with the exponents?
What is Add. 3 + -7 = -4
(9.3 X 109) / (3.1 X 104)
What do you do with the exponents?
What is Subtract. 9 - 4 = 5
The speed of light is 3 x 105 km/second. If the sun is 1.5 x 108 km from earth, how many seconds does it take light to reach the earth? Write answer in scientific notation.
5 x 102 seconds
0.004082
What is 4.082 x 10-3
9.0123 X 10-2
What is 0.090123
(1.2 X 10-5)(4 X 108)
4.8 x 103
(4.8 X 103) / (2 X 109)
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
(14 X 103)(3 X 10-6)
Write in scientific notation.
4.2 x 10-2
(6.14 X 102) / (3.07 X 10-8)
Write in scientific notation.
What is 2 X 1010
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 X 10-3)(3.1 X 10-2)
Write in scientific notation and standard form.
1.302 x 10-4
(38.44.4 X 103) / (3.1 X 105)
Write in scientific and standard notation.
What is 1.24 X 10-1 and 0.124
The US debt is approximately 13 trillion dollars. There are about 300 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 X 1013) / (3.0 X 108)
4.3 X 104 or $43,000 per person.