Download significant digits Answers

Physics: Significant Digits Assignment Answers
Give the number of significant digits in each of the following measurements:
1. 1278.50
_____6_____
7. 8.002______4____
13. 43.050
_____5_____
2. 120000
_____6____
8. 823.012____6____
14. 0.147
______3____
3. 90027.00 _____7_____
9. 0.005789
___4_______ 15. 6271.91 ____6______
4. 0.0053567 ______5___
10. 2.60
______3____ 16.
5. 670
____3_____
11. 542000.
_____6_____ 17. 3.47
6. 0.00730
_____3____
12. 2653008.0 ___8______18. 387465____6_____
6
____1______
____3______
Round off the following numbers to three significant digits:
19. 120000 ___1.20 x 105______
22. 4.53619 ____4.54________
20. 5.457
____5.46__________
23. 43.659 _____43.7_______
-4
21. 0.0008769 _______8.77x10 ___
24. 876493 _8.76x105______
Perform the following operations giving the proper number of significant figures in the answer:
25. 23.4 x 14 = 3.3 x 102_______ 28. 0.005 - 0.0007 = 0.004________
26. 7.895 + 3.4 = 11.3________ 29. 7.895 ÷ 34
= 0.23_________
27. 0.0945 x 1.47 = 0.139______ 30. 0.2 / 0.0005
= 4 x 102_______
Scientific Notation Worksheet
Convert into scientific notation:
Convert into standard notation:
1) 3,400 ____3.400x103____________
2) 0.000023 ____2.3x10=5__________
3) 101,000 _____1.01000x105_______
4) 0.010 ________1.0 x 10-2________
5) 45.01 _________4.501x101_______
6) 1,000,000 ____1.000000x106______
7) 0.00671 ______6.71x10-3__________
8) 4.50 ________4.50x100____________
9) 2.30 x 104 _____2300________
10) 1.76 x 10-3 ____0.00176_________
11) 1.901 x 10-7 __0.0000001901______
12) 8.65 x 10-1 ____0.865___________
13) 9.11 x 103 _______9110__________
14) 5.40 x 101 ______54.0___________
15) 1.76 x 102 ______176____________
16) 7.4 x 10-5 _____0.000074___________
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Sc. 10 Physics
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