7th Grade Math

Test PracticeT

28 Expressions and Patterns

C 39. OPEN ENDED Select a number between 1,000 and 2,000 that can be

expressed as a power.

40. CHALLENGE Write and evaluate two different powers that have the
    same value.


41. Which One Doesn’t Belong? Identify the number that does not belong
    with the other three. Explain your reasoning.

121 361 576 1,000

42. REASONING Analyze the number pattern shown at
    24 = 16
    23 = 8
    22 = 4
    21 = 2
    20 =?

the right. Then write a convincing argument as to

the value of 2^0. Based on your argument, what do

you think will be the value of 2-^1?

43. E WRITE MATH Explain the advantages of using
    exponents to express numerical values.


44. Which of the following models
    represents 6^3?
    A.

B.

C.

12

6

D.

45. To find the area of a square, square the
    length of a side. A square porch is shown.

9 yd

Which of the following expressions

represents the area of the porch

expressed as a power?

F. 9 2 H. 9 3

G. 2 9 I. 9 9

46. Which of the following expressions
    when evaluated has the greatest
    product?
    A. 5 · 5 · 5
    B. 4 · 4 · 4 · 4
    C. 2 · 2 · 2 · 2 · 2 · 2 · 2 · 2
    D. 3 · 3 · 3 · 3 · 3 · 3

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