Q1. Determine the factor and exponent in 2.8 105
Q2. Write 652000 in scientific notation?
Q3. Arrange the following in ascending order:
3.4 105 ,3.6 104 ,3.5 10 5
Q4. Find the product of 5.2 10 5 and4 105
Q5. Write 0.00006 in scientific notation?
Q6. Check whether 0.6 105 is written in scientific notation or not. Explain.
Q7. Write 1.2 105 in standard form.
Q8. Write 60000 in scientific notation.
Q9. Write in descending order:
5.35 104 ,5.35 106 ,5.5 103
Q10. Write 64000 and 0.004 in scientific notation and hence evaluate
64000
0.004
Q11. Evaluate: -44(-3)3
Q12. Evaluate:
4
3
44
4
Q13. If the population of state A is 1.6×104 and the population of state B is 3.1×104.
Determine that population of state B is 2 times the population of state A.
Q14. Write 19500 and 0.00065 in scientific notation and hence evaluate:
19500
0.00065
Q15. Write 6000 and 0.0072 in scientific notation and hence evaluate: 6000 0.0072
Q16. Write the following in standard form:
a)1.76×102
b)7.6×10-6
Q17. Which is greater?
4.5 103 or 0.04 105
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Q18. Evaluate: 4-2+3(25)
Q19. Evaluate: |-34
Q20. Evaluate
3
-2
|
4.5 102
and write the answer in standard form.
2.5 10 3
Answers:
A1. Factor=2.8, exponent=5
A2. 6.52 105
A3. 3.6 104 ,3.4 105 ,3.5 105
A4. 20.8
A5. 6 10 5
A6. No, as 0.6 is less than 1
A7. 120000
A8. 6 104
A9. 5.35 106 ,5.35 104 ,5.5 103
A10.
64000 6.4 104 ,0.004 4 10
64000
1.6 107
0.004
3
A11. 6912
A12. 1
A13.
3.1 104
1.6 104
1.94 2approx.
A14. 19500 = 1.95
0.0065 = 6.5
104
10-4
3 107
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A15. 6000 = 6
0.0072 = 7.2
103
10-3
43.2
A16.a) 176
b) 0.0000076
A17. 4.5 103 is greater
A18. 96.0625
A19. 9
A20. 1.8 105
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