32 questions from the NCCER Core practice test.
10 questions, graded as you go, with the reason for every answer. No sign-up.
A rectangular footing trench outline is 28 ft by 44 ft. How many feet of string line are needed to go once around it?
Answer in ft.
144 ft
Perimeter = 2 × (L + W) = 2 × (44 + 28) = 2 × 72 = 144 ft.
Reference: Perimeter of a rectangle: P = 2(L + W)
Convert 7 ft 9 in. to inches.
Answer in in.
93 in
7 ft × 12 in./ft = 84 in. Then 84 + 9 = 93 in.
Reference: Converting feet and inches to inches
Two pieces of trim measure 5 ft 8 in. and 3 ft 7 in. What is their combined length in inches?
Answer in in.
111 in
5 ft 8 in. = 68 in. and 3 ft 7 in. = 43 in. 68 + 43 = 111 in. (9 ft 3 in.).
Reference: Adding feet and inches