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scientific notation operations and word problems

Authored by Stephanie Ruffner

Mathematics

8th Grade

CCSS covered

Used 4+ times

scientific notation operations and word problems
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25 questions

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1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

The mean distance from the sun to Earth is 9.29 x 107 miles. Jupiter's mean distance from the sun is 4.8388 x 108 miles. What is the difference between these two distances in miles? 

4.3092 x 101
3.9098 x 107
3.9098 x 108
5.7678 x 108

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

A microgram is equal to 1 x 10 -6 grams. How many times greater than a microgram is 1 x 10grams? 

1 x 10-8
1 x 10-4
1 x 104
1 x 108

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The Diplodocus dinosaur is believed to have become extinct approximately 1.38x10years ago.  The Oviraptor is believed to have become extinct approximately 7x10years ago.  How many years were there between the extinction of these two dinosaur types?

6.8 x 108
6.8 x 109
68 x 108
6.8 x 107

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A computer's hard disk drive holds 8 x 10bytes of information.  If Jill buys an extra memory stick that holds 3 x 106 bytes of information, how much memory will the computer hold?

11 x 1013
11 x 107
8.3 x 1013
8.3 x 107

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Simplify: (7.5×103)(1.8×105)\left(7.5\times10^3\right)\left(1.8\times10^5\right)  

 13.5×10813.5\times10^8  

 13.5×10913.5\times10^9  

 1.35×1091.35\times10^9  

 9.3×1089.3\times10^8  

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Michigan has an area of  9.6×1049.6\times10^4  square miles and California has an area of  1.6×1051.6\times10^5  square miles. What is the difference of the two areas?

 .64×104.64\times10^4  

 6.4×1046.4\times10^4  

 7×1057\times10^5  

 .64×105.64\times10^5  

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Simplify:  (6.8×103)+(1.2×102)\left(6.8\times10^{-3}\right)+\left(1.2\times10^{-2}\right)  

 8.16×1038.16\times10^{-3}  

 5×1025\times10^2  

 1.88×1031.88\times10^{-3}  

 1.88×1021.88\times10^{-2}  

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