Scientific Notation Word Problems

Scientific Notation Word Problems
  • Page 1
 1.  
Find the weight of 100 elephants, if each elephant weighs 1.75 × 103 kgs.
a.
1.75 × 106 kgs
b.
1.75 × 104 kgs
c.
1.75 × 105 kgs
d.
1.75 × 101 kgs


Answer: (c)


Correct answer : (3)
 2.  
Simplify 1.86 × 102 ÷ 3.1 × 10- 5 and express the result in scientific notation.
a.
0.6 × 106
b.
6.0 × 106
c.
6.0 × 105
d.
6.0 × 107


Answer: (b)


Correct answer : (2)
 3.  
Simplify and express the result in scientific notation.
(7.2 × 106) (5.8 × 103)
a.
4.176
b.
4.176 × 108
c.
4.176 × 109
d.
4.176 × 1010


Answer: (d)


Correct answer : (4)
 4.  
Simplify and write the result in scientific notation.
1.73 × 10- 3 - 3.62 × 10- 4
a.
1.368 × 103
b.
13.68 × 10- 3
c.
1.368 × 10- 4
d.
1.368 × 10- 3


Answer: (d)


Correct answer : (4)
 5.  
Simplify and identify the result in scientific notation.
4.75 × 105 - 2.34 × 105
a.
2.41 × 105
b.
24.1 × 104
c.
2.41 × 104
d.
241 × 105


Answer: (a)


Correct answer : (1)
 6.  
Add and identify the result in scientific notation.
1.78 × 102 + 5.02 × 101
a.
2.282 × 103
b.
228.2 × 102
c.
22.82 × 102
d.
2.282 × 102


Answer: (d)


Correct answer : (4)
 7.  
Add and identify the result in scientific notation.
1.28 × 106 + 3.92 × 105
a.
167.2 × 104
b.
1672 × 103
c.
16.72 × 105
d.
1.672 × 106


Answer: (d)


Correct answer : (4)
 8.  
Objective: Read, write, and represent very large and very small numbers in a variety of forms including exponential.
Simplify the product (24.2 × 1013) (17.5 × 10 - 8) and write the result in scientific notation.
a.
4.235 × 10- 7
b.
423.5 × 105
c.
4.235 × 107
d.
4.235 × 108


Answer: (c)


Correct answer : (3)
 9.  
Objective: Read, write, and represent very large and very small numbers in a variety of forms including exponential.
Simplify 0.88×1062.2×10-6 and write the result in scientific notation.
a.
4 × 1012
b.
4 × 10- 1
c.
0.4 × 1012
d.
4 × 1011


Answer: (d)


Correct answer : (4)
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