Q1. Write 2340000000 in the scientific notation.
Q2. Determine the coefficient and exponent in 2.3 10
5
Q3. Write 56000,0.00014 and 0.0003 in scientific notation and hence evaluate:
56000 0.0003
0.00014
Q4. Write the following in standard form:
a) 198000000
b) 0.0000055
c) 0.000536
45 4 8
22 2 5
Q5. Evaluate:
28 212
335 334
Q6. Evaluate:
Q7. Write 900000,132000 and 0.0008 in scientific notation and hence evaluate:
Q8. Evaluate
900000 132000
0.0008
0.0008 0.0012
and write the answer in standard form.
0.000002
Q9. Arrange the following in descending order:
2.8 105 ,2.8 104 ,0.029 106
Q10. Arrange the following in ascending order:
4 10 5 ,4.2 10 5 ,5 10
Q11. Evaluate:
Q12. Evaluate:
7
5
11
9
25
3
5
2
3
5
11
5
5
9
Q13. Write the following in scientific notation:
a) 12000000
b) 0.00000034
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Q14. Which of the following is greater?
3.4 10 8 or 3.4 10
9
Q15. Tell whether the number is written in scientific notation. Explain
a) 11.4 10 8
b) 2.2 109
Q16. Write 120000000 and 0.000000056 in scientific notation and hence evaluate:
0.000000056
120000000
Q17. Write the following in standard form:
a) 2.48 109
b) 1.02 10 10
1
2
Q18. Evaluate:
6
1
2
4
1
2
Q19. Evaluate:
(3.56 10 12 )(4.5 1024 )
5.5 10 10
Q20.Evaluate:
(3.5 1035 )(2.5 1034 )
3.2 1040 1.6 1041
0
Answers:
A1. 2.34 109
A2. coefficient=2.3
Exponent=-5
104
A3. 56000 = 5.6
0.00014 = 1.4
0.0003 = 3
10-4
10-4
1.2 105
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A4. a) 1.98 108
b) 5.5 10
6
c) 5.36 10 4
1
8 or
A5.
10-1
1.25
A6.
1
48
105
A7. 900000 = 9
132000 = 1.32
105
10-4
0.0008 = 8
1.485 1014
A8. 4.8
10-1
A9. 2.8 105 ,0.029 106 ,2.8 104
A10. 5 10 7 ,4 10 5 ,4.2 10 5
A11.
11
5
A12.
5
3
A13. a) 1.2 107
b) 3.4 10
A14. 3.4 10
8
7
is greater
A15. a) No, because factor is greater than 1
b) Yes, because factor is at least 1 and less than 10.power of 10 is integer.
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A16. 120000000 = 1.2
0.000000056 = 5.6
108
10-8
4.7
A17. a) 2480000000
b) 0.000000000102
A18.
5
4
A19. 2.9 1022
A20. 1.7 10 12
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