NAME ___________________________________________________ DATE _____________________ PERIOD __________
Lesson 5 Homework Practice
Compute with Scientific Notation
Evaluate each expression. Express the result in scientific notation.
1. (50,000)(4.2 × 102) 2.1 × 107
2. (9.3 × 105)(1.26 × 10-2)
3. (2.9 × 104)(1.5 × 10-6) 4.35 × 10-2
4. (6.7 × 10-1)(40,000)
5. (5.5 × 103)(7 × 103) 3.85 × 107
6. (4.3 × 106)(2.1 × 10-2)
7.6 × 102
7. −
3.8
2.38 × 10−4
8. −
3
1.4 × 10-7
2.4
6.03 × 1014
10. −
-8
6.7 × 1021
3.5 × 101
4.8 × 10-1
12. −
7
1.44 × 104
9. −
6000
8.05 × 103
11. −
2
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2.3 × 10
2 × 102
1.7 × 10
9 × 10
5 × 10
1.1718 × 104
2.68 × 104
9.03 × 104
9.6 × 10-9
13. (1.6 × 102) + (2.29 × 103) 2.45 × 103
14. (9.38 × 101) + (5 × 103)
15. (3.5 × 107) - (1.7 × 106) 3.33 × 107
16. (8.88 × 10-1) - (1.45 × 10-2) 8.735 × 10-1
17. (63,000) + (3.1 × 103)
6.61 × 104
18. (7.14 × 104) + (12,000)
19. (6.35 × 108) - (7.9 × 108) −1.55 × 108 20. (4 × 107) - (2 × 105)
5.0938 × 103
8.34 × 104
3.98 × 107
21. (8100) + (3.0 × 103) 1.11 × 104
22. (1.06 × 104) + (1.3 × 104)
2.36 × 104
23. (5.4 × 106) - (147,000) 5.253 × 106
24. (8.19 × 102) - (7.15 × 101) 7.475 × 102
25. The distance from Earth to the Sun is 9.3 × 107 miles, and the distance from Earth to Mars
is 4.6 × 107 miles. How many more miles is it from Earth to the Sun than Earth to Mars?
4.7 × 107 miles
26. The area of the United States (including water) is approximately 3.8 × 106 sq. miles. The
area of Alaska (including water) is approximately 6.6 × 105 sq. miles. About how many times
the number of square miles of Alaska is the United States? 5.76 × 101 times
Math Accelerated • Chapter 4 Powers and Roots