© 2004 Refrigeration Training Services - R1 Subject 4 Basic Math & Measurement v1.2 1

Measurements

• Inches• Feet• Yard

Basic Math & Measurement

© 2004 Refrigeration Training Services - R1 Subject 4 Basic Math & Measurement v1.2 2

12 inches = 1 foot12 = 1

Linear Measurement1 inch

1

12 inches = 1 foot 36 inches = 1 yard3 feet = 1 yard

© 2004 Refrigeration Training Services - R1 Subject 4 Basic Math & Measurement v1.2 3

Fraction of an Inch

¼¼½ ¼¾ ¼1

© 2004 Refrigeration Training Services - R1 Subject 4 Basic Math & Measurement v1.2 4

Fraction of an Inch• Two halves in a inch• Four quarters to an inch• Eight eighths in a inch• Sixteen sixteenths in a inch

© 2004 Refrigeration Training Services - R1 Subject 4 Basic Math & Measurement v1.2 5

Other fractions of an inch

1/16”

2/16” = 1/8”

3/16”“¼” ½” ¾”

© 2004 Refrigeration Training Services - R1 Subject 4 Basic Math & Measurement v1.2 6

Area of a square or rectangle

• Multiply the length • Times the width• Result is in square inches

© 2004 Refrigeration Training Services - R1 Subject 4 Basic Math & Measurement v1.2 7

Calculating Area

1 2 3 4 5 6 7 8 9 10 11

2

12

3

4

5

6

7

8

9

10

11

12

11 1 x 1 = 1 square inch

12 x 12 = 144 square inches

12

12