7th Grade Math

Test PracticeT

60 Expressions and Patterns

C 31. Which One Doesn’t Belong? Identify the number that does not have the

same characteristic as the other three. Explain your reasoning.

√  5 √  18 √ 81  √ 1,000

32. OPEN ENDED Select three numbers with square roots between 4 and 5.


33. NUMBER SENSE Explain why 8 is the best whole number estimate for √71.

CHALLENGE Estimate the square root of each number to the nearest tenth.

34. √ 0.26  35. √ 0.51 36. √ 1.99 37. √ 3.04


35. FIND THE ERROR Caitlyn is estimating √125. Find her mistake and
    correct it.

√125 ≈ 12

39. E WRITE MATH Apply what you know about numbers to explain
    why √ 30 is an irrational number.


40. Reina wrote four numbers on a piece of
    paper. She then asked Tyron to select
    the number closest to 5. Which number
    should he select?

√ 56  √ 48  √ 37 √  28

A. √  56

B. √  48

C. √  37

D. √  28

41. Which of the following is an irrational
    number?
    F. √  25
    G. √  7
    H. - 13
    I. _^4
    5


42. EXTENDED RESPONSE The area of a
    square is 169 square inches.
    Part A What is the length of a side?
    Part B What is the perimeter of the
    square? Explain how you solved.

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