NCCER Core Construction Math Fundamentals 3

Question 1

Convert 3.75 feet to feet and inches.

Accepted Answer

3 feet 9 inches

Answer

0.75 feet x 12 = 9 inches. So 3.75 feet = 3 feet 9 inches.

Question 2

A room requires 180 sq ft of tile. If tiles come in boxes of 20, how many boxes are needed?

Accepted Answer

9 boxes

Answer

180 / 20 = 9 boxes.

Question 3

What is the perimeter of a 30 ft by 50 ft rectangular foundation?

Accepted Answer

160 feet

Answer

Perimeter = 2(50 + 30) = 2(80) = 160 feet.

Question 4

How many cubic yards of concrete are needed for a 20 ft x 30 ft x 4 inch slab?

Accepted Answer

7.4 cubic yards

Answer

4 inches = 0.333 ft. Volume = 20 x 30 x 0.333 = 200 cu ft. 200 / 27 = 7.4 cubic yards.

Question 5

What is 5 feet 8 inches plus 3 feet 7 inches?

Accepted Answer

9 feet 3 inches

Answer

Feet: 5 + 3 = 8. Inches: 8 + 7 = 15. Convert: 15" = 1' 3". Total: 9 feet 3 inches.

NCCER Core - National Center for Construction Education and Research Core Certification Practice Test