Name: ______________________________
Scientific Notation Questions
1.
Which is larger 9.1 x 104 or 910,000 ?
2.
Circle the number in the box that is not written in correct scientific notation.
5.1 x 106
2 x 103
_____________________
14 x 104
Explain why you chose the number above.
________________________________________________________________________________
________________________________________________________________________________
3.
4.
5.
6.
7.
Find the sum of 5.9 x 107 and 7.01 x 108.
Show your work. Write the answer in scientific notation.
_______________________
Subtract 9.08 x 105 from 1.8 x 106.
Show your work. Write your answer in scientific notation.
_______________________
Pluto is a dwarf planet that is 4.2 billion kilometers
from Earth. Write this number is scientific notation.
_______________________
The sun is 150 million kilometers from Earth. Write
this number is scientific notation.
_______________________
How much farther is Pluto than the sun?
Show your work. Write your answer in scientific notation.
_______________________
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ANSWER KEY
Scientific Notation Questions
1.
Which is larger 9.1 x 104 or 910,000 ?
2.
Circle the number in the box that is not written in correct scientific notation.
5.1 x 106
2 x 103
910,000
14 x 104
Explain why you chose the number above.
This first factor should always be less than ten.
3.
Find the sum of 5.9 x 107 and 7.01 x 108.
Show your work. Write your answer in scientific notation.
7.6 x 108
701,000,000 + 59,000,000 = 760,000,000
4.
Subtract 9.08 x 105 from 1.8 x 106.
Show your work. Write your answer in scientific notation.
8.92 x 105
1,800,000 - 908,000 = 892,000
5.
7.
8.
Pluto is a dwarf planet that is 4.2 billion kilometers
from Earth. Write this number is scientific notation.
4.2 x 109 kilometers
The sun is 150 million kilometers from Earth. Write
this number is scientific notation.
1.5 x 108 kilometers
How much farther is Pluto than the sun?
Show your work. Write your answer in scientific notation.
4.05 x 109 kilometers
4,200,000,000 - 150,000,000 = 4,050,000,000 kilometers
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