Quiz: Scientific Notation

1. Rewrite in scientific notation.
  • 23.5 × 104
a. It is already in scientific notation.
b. 2.35 × 103
c. 2.35 × 105
2. Rewrite in scientific notation.
  • 0.056 × 10–3
a. It is already in scientific notation.
b. 5.6 × 10–5
c. 5.6 × 10–1
3. 1.5 × 105 =
a. 0.000015
b. 150,000
c. 1,500,000
4. 27,000 written in scientific notation is
a. 27 × 103
b. 2.7 × 104
c. 2.7 × 10–4
5. 7.63 × 10–4 =
a. 0.0000763
b. 0.000763
c. 76,300
6. 0.000345 written in scientific notation is
a. 3.45 × 10–4
b. 3.45
c. 3.45 × 104
7. Which of these values is the greatest?
a. 5.6 × 10–2
b. 0.0056
c. 0.56
8. Which of these values is the least?
a. 23.4 × 10–3
b. 23 × 10–2
c. 0.235 × 101
9. Multiply and express the answer in scientific notation.
  • (4 × 103)(2 × 104)
a. 6 × 107
b. 8 × 107
c. 8 × 1012
10. Multiply and express the answer in scientific notation.
  • (5 × 105) × (3 × 103)
a. 1.5 × 107
b. 15 × 108
c. 1.5 × 109
11. Multiply and express the answer in scientific notation.
  • (2.1 × 106)(6 × 10–3)
a. 1.26 × 104
b. 1.26 × 102
c. 12.6 × 103
12. Multiply and express the answer in scientific notation.
  • (5 × 102)(6 × 103)(7 × 104)
a. 2.1 × 1026
b. 2.1 × 1022
c. 2.1 × 1011
13. Divide and express the answer in scientific notation.
  • (6 × 1012) ÷ (3 × 104)
a. 2 × 103
b. 2 × 108
c. 3 × 108
14. Divide and express the answer in scientific notation.
  • (4 × 10–6) ÷ (5 × 10–3)
a. 0.8 × 102
b. 8 × 10–4
c. 8 × 10–2
15. Divide and express the answer in scientific notation.
  • (1.2 × 106) ÷ (4.8 × 102)
a. 2.5 × 103
b. 25 × 103
c. 0.25 × 104
16. equation
a. 4 × 10–3
b. 4 × 102
c. 4 × 104
17. equation
a. 7.5 × 10–3
b. 7.5 × 10–1
c. 7.5 × 101
18. Which row has all equal values?
a. 0.25 × 106; 2.5 × 107; 25 × 108
b. 0.028 × 10–1; 2.8 × 10–2; 280 × 10–3
c. 0.5 × 103; 50 × 101; 500 × 100
19. Which expression has the same value as 5 × 10–2?
a. (25 × 10–4)(20 × 10–1)
b. (12 × 10–3) ÷ (24 × 10–2)
c. (36 × 10–1) ÷ (18 × 101)

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