GED Practice

GED Math Review: Rewriting Number Expressions


Questions:


  1. 12(1/3 + 3/4)
    • 12(4/7) = 47/7 = 6 6/7
    • 13/3 + 15/4 = 97/12 = 8 1/12
    • 12(13/12) = 12
    • 12 + 1/3 + 3/4 = 13 1/12
  2. 42 + 56
    • (40 + 2) + (60 - 4) = (40 + 60) - (2 + 4) = 92
    • (30 + 12) + (40 + 16) = 30 + 12 + 40 + 16 = 94
    • (40 + 2) + (50 + 6) = (40 + 50) + (2 + 6) = 98
    • (60 - 18) + (60 - 4) = (60 + 60) - (18 - 4) = 106
  3. 75/5
  4. 7 x 24
    • 7 x 4 + 20 = 28 + 20 = 48
    • 7 + 20 x 4 = 7 + 80 = 87
    • 7 x 20 + 4 = 140 + 4 = 144
    • 7 x 20 + 7 x 4 = 140 + 28 = 168
  5. Hannah and three friends go to the movies and all order popcorn. Tickets cost $10 and popcorn is $5 each. Use the distributive property to write an expression that shows how much money the group spends. _________
  6. Greg is lining a large, rectangular display box with a decorative molding. The display box is 28 inches on one edge and 35 inches on the other. How much molding does Greg need?
    • 61 linear inches
    • 104 linear inches
    • 126 linear inches
    • 140 linear inches
  7. During a trip to Hawaii,2/3 of the group of 60 take the tour to the volcano, while 1/4 go bird-watching. The rest volunteer to dig up invasive plant species. How many volunteer?
    • 5
    • 15
    • 40
    • 55
  8. The Big Round Ball Company makes shot-puts in several weights: 4 pounds, 6 pounds, and 10 pounds. The company wants the weight of every box of shot-puts it ships to be the same, regardless of which particular single size shot-put is inside. What is the lightest possible box?
    • 30 pounds
    • 60 pounds
    • 90 pounds
    • 120 pounds
Answers:

  1. 12(13/12) = 12
  2. (30 + 12) + (40 + 16) = 30 + 12 + 40 + 16 = 94
  3. c.
  4. 7 x 20 + 7 x 4 = 140 + 28 = 168
  5. 4(10 + 5) = 60
  6. 126 linear inches
  7. 5
  8. 60 pounds


    Reference:


    Complete Test Preparation for the GED Test 2014 by Steck-Vaughn