Guides · Trade Math
Trade math
Pencil and paper. No calculator. Miss the cutoff and you typically wait 6 to 12 months. Locals vary. Check your local's test format.
Math and tape measure
Interactive study guide. Rectangles, triangles, circles, and tape-measure reading to 1/16 inch, with worked examples on the page.
Open study guide →Reading a tape measure to 1/16 inch
The tick-mark hierarchy, reducing fractions, interactive ruler, and three practice reads. The foundation for every measurement question.
Read guide →Adding, subtracting, multiplying & dividing fractions
Common denominators, improper fractions, mixed numbers, and the shortcuts that make fraction math fast on pencil and paper.
Read guide →Calculating total square feet
Area formulas for rectangles, triangles, circles, and composite shapes. How to handle irregular rooms and subtract openings.
Read guide →Calculating total cubic feet
Volume for boxes, cylinders, and composite solids. Unit conversion (gallons, cubic feet, cubic inches) without a calculator.
Read guide →Perimeter of shapes and objects
Straight-sided shapes, circles (circumference), and composite outlines. The formulas plumbers actually use to order material.
Read guide →Try 18 questions free
Miss the cutoff and you typically wait 6 to 12 months. If a topic your local tests is missing, email support@mytradesblueprint.com.