7th Grade Math

Test PracticeT

C 33. OPEN ENDED Select two like fractions with a difference of _^13 and with

denominators that are not 3. Justify your selection.

34. CHALLENGE Simplify the following expression.
    _^14
    15 +

_^13

15 -

_^12

15 +

_^11

15 -

_^10

15 + ... -

_^4

15 +

_^3

15 -

_^2

15 +

_^1

15

35. E WRITE MATH Write a simple rule for adding and subtracting like
    fractions.

Replace each ● with <, >, or = to make a true sentence. (Lesson 1C)

40. 2 ^7
    8
    ● 2.75 41. - ^1
    3
    ● - ^7
    3
    42. ^5
    7
    ● ^4
    5
    43. 3 ^6
    11
    ● 3 _^9
    14

Write each decimal as a fraction. (Lesson 1B)

44. 0.56 45. 0.375 46. 0.07 47. 0.019

Lesson 2A Add and Subtract Fractions 143

36. A group of friends bought two large
    pizzas and ate only part of each pizza.
    The pictures show how much of the
    pizzas were left.
    First Pizza Second Pizza

How many pizzas did they eat?

A. _^38 C. 1 _^14

B. ^58 D. 1 ^38

37. At a school carnival, homemade pies
    were cut into 8 equal-size pieces. Eric
    sold 13 pieces, Elena sold 7 pieces, and
    Tanya sold 10 pieces. Which expression
    can be used to find the total number of
    pies sold by Eric, Elena, and Tanya?
    F. 13 + 7 + 10 H. ^138 × 87 × _^108

G. 8(13 + 7 + 10) I. ^138 + 87 + _^108

38. A male Jumping Spider is shown below.

169 in.

The length of a female Jumping Spider

is about _ 165 inch. How much longer is a

male Jumping Spider than a female

Jumping Spider?

A. ^78 inch C. ^14 inch

B. ^12 inch D. 163 inch

39. GRIDDED RESPONSE What is the
    value of x that makes the statement
    below true?
    ^79 - 9 x = _^13

139_156_C3L2_895130.indd 143 12/31/09 12:37 PM