7-1 Practice - Weebly

Name

Class

7-1 Practice Zero and Negative Exponents

Simplify each expression. 1. 370 1

2. 34

1 81

Date

Form K

3.

5 52

125

4.

3 61

18

5. (5)2 215

6.

1121

1 112

7. 110 1

9. (15p)0 1

11. 4x3y0

4 x3

13.

6a2(bc)2 d4

6b2ac22d4

8. (7n)2 491n2

10.

+

3 5

,2

25 9

12.

8m2 4n1

2n m2

14.

+

5s 6t

,2

36t2 25s2

15. 42h4j3 j 3

16h4

17.

10fg5h0 h2

10fh2 g5

16. (6yz)2x0 36y12z2

18.

6t1 11(uv)3w4

6u3v3 11tw4

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Name

Class

7-1

Practice (continued)

Zero and Negative Exponents

Evaluate each expression for x 2, y 4, and z 2.

19. 4x1 2

20. z3

1 8

Date

Form K

21. 2xy2z2 1

22. 6x3z0 48

23. x2 14

24. (y)3 614

Write each number as a power of 10 using negative exponents.

25.

1 10,000

104

26.

1 100,000

105

Write each expression as a decimal. 27. 106 0.000001

28. 6 103 0.006

29. e population of a suburb is 4000 people. e population of the suburb is expected to double each decade. e expression 4000 2d models the population of the suburb after each decade d. Evaluate the expression for d 2. Describe what the value of the expression represents in this situation. 1000; This is the number of people who lived in the suburb 2 decades ago.

30. Writing Describe how a power with a zero exponent and a power with a

negative exponent can be simpli ed.

Any term raised to a zero exponent is equal to one. A term raised to a negative exponent should be made positive by moving it to the denominator if it is in the numerator and to the numerator if it is in the denominator.

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