Metric System
How many millimeters (mm) are in 1 centimeter (cm)?
10
3/4 x 2/3 =
6/12 --> 1/2
In a fillet weld symbol, where is the size of the weld written?
to the left of the symbol
Convert to a mixed number: 5/4
1 1/4
Convert 25 mm to centimeters.
2.5 cm
Divide:
1/2 ÷ 1/4
1/2 x 4/1 = 4/2 --> 2
Remember: keep, change, flip
Where is the length of the weld written?
to the right of the symbol
Convert to an improper fraction: 2 ⅓
7/3
How many centimeters are in 1 meter?
100
Add these together:
3/4 + 6/10 =
LCD of 4 and 10 is = 20
15/20 + 12/20 = 27/20
What does this mean: 2"–4" on a weld symbol?
2-inch welds with 4 inches between welds
Convert to a mixed number: 11/2
5 and 1/2
Convert 1.2 meters to centimeters.
120cm
7/8 + 9/20
Is your answer a proper or improper fraction?
35/40 + 18/40 = 53/40
improper
What does an intermittent weld indicate?
welds are spaced with gaps between them
Convert to an improper fraction: 3 ¾
15/4
A steel plate is 450 mm long. Convert this to meters.
0.45m (divide by 1000)
Multiply: 1 ½ × ⅔
Add and simplify: 1 ⅝ + ⅞
2 and 1/2