Fractions
Metric Measurements
Geometry
RACE- DECIMALS
Surprise Me!
100
A 1-inch multipass fillet weld requires an overlap of 1/2 to 2/3 of an inch. What is the difference between these two fractions?
1/6 of an inch
100
A workpiece is 1.5 meters long. You cut off 25 cm. How many centimeters remain?
125 cm
100
You are welding a T-joint where the plates are perpendicular. What is the sum of the two angles on either side of the vertical plate?
180 degrees
100
7/13
0.538
100
What are the 3 types of angles we discussed in class? Name and draw an example of each.
200
Subtract 5/32 from 11/16 to find the remaining plate gap in inches.
17/32"
200
A weld travel speed is 4 to 6 inches per minute (IPM). If 1 inch is roughly 25.4 mm, what is the minimum speed in mm per minute?
101.6 mm/minute
200
A gusset plate needs to be cut in the shape of a right triangle to reinforce a corner. The base of the triangle is 8 inches and the height is 12 inches. What is the total area of the plate?
48 inches squared
(1/2 b x h)
200
0.333
1/3
200
Round to the nearest thousandth of an inch:
14.469835 inches
14.470 inches
300
You are depositing a puddle 2 and 1/2 to 3 times the diameter of a 1/8 inch electrode. What is the specific range of the puddle width in inches?
5/16" to 3/8"
300
A filler rod is 350 mm long. If you use 5/8 of the rod, how many millimeters are left?
131.25 mm
300
You are checking a frame for squareness. If one side of the corner measures 60 cm and the other side measures 80 cm, what must the diagonal (hypotenuse) measure in centimeters for the corner to be exactly 90 degrees?
100 cm
(60 squared + 80 squared = hypotenuse squared)
300
0.4375
7/16
300
You are preparing to weld a circular cover plate onto the end of a heavy-duty exhaust pipe. The blueprint indicates the pipe has a diameter of 12 inches. To ensure you have enough shielding gas and filler metal, you need to calculate the surface area of the plate.
What is the radius, and what is the surface area?
A = pi x r^2
113.097
3.14 x 36 = 113.4 inches
pi x 36 = 113.097 inches
400
If a T-joint requires 6 passes to reach 1 inch, and each pass adds an equal 1/8" of throat thickness, how much thickness is still needed after pass 4?
1/4 "
400
A technical spec requires a 75 mm weld. How many meters is this?
0.075 meters
400
A triangular scrap piece has an area of 30 square inches. If the base of the piece is 5 inches, what is the height of the triangle?
12 inches
400
3/8
0.375
400
You are welding a triangular gusset plate. You know that one angle is a right angle and another is 35°. What is the measurement of the third missing angle?
55 degrees
500
A specialized weld specification for a heavy-duty T-joint requires a base plate thickness of seven-eighths of an inch. To determine the total width of the heat-affected zone, the technician must triple that base plate measurement. Finally, to account for the root opening and a backing strip, the technician must increase that total by exactly five-sixteenths of an inch. What is the total layout width required?
2 and 15/16 "
500
You have a steel pipe that is 2.5 meters long. You cut off a piece that is 85 cm. How many millimeters of pipe are left?
1650 mm
500
You are welding a support brace that forms a right triangle. The area of the triangular space under the brace must be exactly 24 square inches. If the vertical rise of the brace is 6 inches, use the Pythagorean Theorem to find the exact length of the diagonal brace itself.
10 inches
500
0.875 + 1/4
1 and 1/8
or
1.125
500
FINAL QUESTION:
You are tasked with fabricating a circular reinforcement plate for a project that uses metric blueprints. The blueprint specifies the plate must have a diameter of 30 centimeters. To calculate the amount of protective hardfacing material needed for the surface of this plate, you must find the area in square inches.
109.6 square inches