Shop math and weld cost
List factors that affect the cost of producing weldments.
-Material -Weld design -Welding process -Finishing -Labor -Overhead
List three examples of whole numbers.
1) example of whole numbers are one, two, three, four, five, six, seven, eight, nine, and 10.
Using the Pythagorean theorem, find "c" if "a" = 6 and "b" = 8
6×6 = 36 8×8 = 64 36+64 = 100 100÷10 = 10 The answer is C equals 10
What are two ways math is most commonly used in the welding shop?
Dimensioning and pricing
List three examples of decimals fractions.
Examples of decimals fractions are 0.1, 0.35, 0.9518, 1.1, 5.4, 3.14, and 1 to 5.1234.
List three examples of fractions.
Examples of fractions are 1/2, 3/4, 5/16, 2 3/8, and 9 1/2
What is the first step in the sequence of mathematical operations?
Perform all operations within parentheses first
What is the two letter abbreviation for the metric system?
The metric system, abbreviated as S I.
How many total feet of metal stock would you need if one pieces 12'5" long and the other is 7'3" long?
12' + 7' = 19' 5" + 3" = 8" 19' 8"
If you need two pieces of pipe - one must be 15 ft and the other 10 ft - what is the total amount of pipe needed?
15' + 10' = 25'
What would the labor cost be if 20 hours were worked at an hourly rate of $25?
20 hours times $25 equals $500
Add the following angles: a) 30° 50' +20° 5' b) 25° 25' +62° 45'
30° 50' + 20° 5' = 50° 55' 25° 25' + 62° 45' = 88° 10'
Subtractive following angles: a) 45° 48' -10° 20' b) 90° 5' -3° 15'
45° 48' - 10° 20' = 35° 28' 90° 5' - 3° 15' = 86° 50'
List three examples of mixed unit.
An example of a mixed unit is a liner measurement such as 2'6", with part of the measurement expressed in feet (2) and the other part in inches (6). Other examples of next units are angular measurements such as 45° 0', Weight measurements such as 8 lbs. 4 oz. and time measurements such as three hours 20 minutes 15 seconds. The most common types of mixed units use in welding fabrication are linear dimensions, angular dimensions, weight and time
Sketch a right triangle, equilateral triangle, and isosceles triangle
Chapter 20 page 500
