Trade Math, Ironworking – Module ID 30201-11

Trade Math, Ironworking – Module ID 30201-11


Module ID 30201-11 This module introduces the mathematical operations commonly used in construction, and explains how geometry is used in the trade. Trainees will learn how to add, subtract, multiply, and divide whole numbers, fractions, and decimals, as well as how to convert decimals, fractions, and percentages.

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Upon completion of this module, the trainee will be able to do the following:

1. Perform calculations using fractions.

2. Perform calculations using decimals and percentages.

3. Convert between fractions of a foot and decimals of a foot.

4. Calculate the areas of selected items. 5. Solve problems for right triangles.

6. Calculate the volumes of selected items.

7. Calculate the weights of selected items.

8. Solve problems for unknown quantities.

Performance Tasks

This is a knowledge-based module. There are no performance tasks.

Module Index

Sessions I through III. Introduction; Math Review

A. Introduction

B. Math Review

1. Working with Whole Numbers

2. Adding and Subtracting Whole Numbers; Practice Exercises

3. Multiplying and Dividing Whole Numbers; Practice Exercises

4. Working with Common Fractions

5. Reducing Common Fractions; Practice Exercises

6. Finding Common Denominators; Practice Exercises

7. Adding and Subtracting Common Fractions; Practice Exercises

8. Multiplying and Dividing Common Fractions; Practice Exercises

9. Working with Decimal Fractions; Practice Exercises

10. Converting Decimal Fractions to Common Fractions; Practice Exercises

11. Converting Common Fractions to Decimal Fractions; Practice Exercises

12. Adding and Subtracting Decimal Fractions; Practice Exercises

13. Multiplying and Dividing Decimal Fractions; Practice Exercises

14. Percentages; Practice Exercises

15. Tolerances; Practice Exercises

16. Squares and Square Roots

Sessions IV and V. Linear Measure; Equations; Formulas

A. Linear Measure; Practice Exercises

B. Equations

C. Formulas

1. Surface Area

2. Rectangles and Squares; Practice Exercises

3. Triangles; Practice Exercises

4. Circles; Practice Exercises

5. Volume

6. Cubes and Rectangular Objects

7. Cylinders; Practice Exercises

Sessions VI and VII. Right Triangles; Weight; Solving for Unknowns

A. Right Triangles

1. 3-4-5 Rule Practice Exercises

B. Weight

1. Weight of Steel Bar

2. Weight of Steel Plate

3. Weight of Steel Tank

C. Solving for Unknowns; Practice Exercises

Sessions VIII and IX. Weight Calculations: Practical Application

A. Weight Calculations

1. Steel Plate; Practice Exercises

2. Steel Tanks; Practice Exercises

3. Shapes; Practice Exercises

4. Circular Plate; Practice Exercises

5. Cylinders; Practice Exercises

B. Structural Steel Member Weight Calculations;

Practice Exercises

Session X. Review and Testing

A. Review

B. Module Examination

1. Trainees must score 70% or higher to receive recognition from NCCER.

2. Record the testing results on NCCER National Registry and submit the results to the Training Program Sponsor

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