© 2022 Johnson Level & Tool — 14
EXAMPLES
ADDING AND SUBTRACTING
STRINGS OF DIMENSIONS
Add the following measurements:
• 15 Feet 3-3/4 Inches
• 11 Feet 5-1/4 Inches
• 18 .25 Inches
Then subtract 2-1/8 Inches:
KEYSTROKE DISPLAY
On/C
On/C
0
1
5
Feet
3
Inch
3
/
4
+
15 FEET 3-3/4 INCH
1
1
Feet
5
Inch
1
/
4
+
26 FEET 9 INCH
1
8
•
2
5
Inch
=
28 FEET 3-1/4 INCH
–
2
Inch
1
/
8
=
28 FEET 1-1/8 INCH
MULTIPLYING DIMENSIONS
What is the perimeter of a room with three walls which
measure 6 Feet 2-1/2 Inches each?
KEYSTROKE DISPLAY
3
×
6
Feet
2
Inch
1
/
2
=
18 FEET 7-1/2 INCH
Multiply 5 Feet 3 Inches by 11 Feet 6-1/2 Inches:
KEYSTROKE DISPLAY
5
Feet
3
Inch
×
1
1
Feet
6
Inch
1
/
2
=
60.59375 SQ FEET