Carpentry & Masonry Trade Knowledge — Practice
Carpentry: math: practice questions
Our Carpentry & Masonry bank has 5 questions on this topic. Here are 3 of them with answers; the full mock exam draws from every topic, like the real one.
Question 1 · Carpentry
A wall is 9 ft 4 in long. How many inches is that?
- 94 inches
- 108 inches
- 112 inches
- 124 inches
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C. 112 inches — 9 × 12 + 4.
Question 2 · Carpentry
How many cubic yards of concrete are needed for a slab 20 ft × 30 ft × 4 inches thick?
- About 74 cubic yards
- About 7.4 cubic yards
- About 20 cubic yards
- About 2.4 cubic yards
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B. About 7.4 cubic yards — 20 × 30 × 0.333 = 200 ft³ ÷ 27.
Question 3 · Carpentry
A room is 14 ft by 16 ft. How many square feet of subfloor are needed with 10% added for waste?
- About 224 square feet
- About 246 square feet
- About 260 square feet
- About 300 square feet
Show the answer
B. About 246 square feet — 224 × 1.1.