## 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. 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
4. 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. _________
5. 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
6. 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
7. 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

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