7th Grade Math

Test PracticeT

Lesson 3D Multiply and Divide Fractions 173

C 47. CHALLENGE If _^56 is divided by a certain fraction _a

b

, the result is _^14. What

is the fraction _a

b

?

48. FIND THE ERROR Blake is finding ^45 ÷ ^67.
    Find his mistake and correct it.

_^4

5

÷ _^6

7

= _^5

4

• ^6
  7
  = ^30
  28
  or 1 _^1
  14

49. E WRITE MATH If you divide a proper fraction by another proper
    fraction, is it possible to get a mixed number as an answer? Explain
    your reasoning.


50. ROCK CLIMBING A rock climber stops to rest at a ledge 150 feet above the
    ground. If this represents 75% of the total climb, how high above the
    ground is the top of the rock? (Lesson 3C)


51. Find ^1
    10
    × ^5
    8
    . Write in simplest form. (Lesson 3B)


52. EXERCISE The table shows the number of miles
    Tonya jogged each week. What is the total number
    of miles that Tonya jogged? (Lesson 3B)


53. Which expression represents the least
    value?
    A. 298 + ^1
    2
    B. 298 - ^1
    2
    C. 298 × ^1
    2
    D. 298 ÷ ^1
    2


54. How many small boxes of peanuts
    shown can be filled from the large box
    of peanuts?

634 lb

(^118) lb
F. 4 H. 6
G. 5 I. 7
Week 12345
Distance
Jogged
(mi)
7 61 7 ^16 5 ^23 5 ^23 5 _ 32
168_173_C3L3_895130.indd 173 12/31/09 12:44 PM