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3/16" + 15/16"

Adding two fractions of an inch, exactly — the everyday jobsite arithmetic that a decimal calculator gets wrong. Reduced, carried, and shown in millimetres.

3/16" + 15/16" =

=1-1/8"

Sum

1-1/8"

Decimal inch

1.125"

Millimetres

28.575 mm

3/16" − 15/16"

-0-3/4"

The work

Over a common denominator

Put both over 16: 3/16 = 3/16 and 15/16 = 15/16. Add the tops: 3/16 + 15/16 = 18/16, which carries past one inch. Reduced, that's 1-1/8" (1.125 inches). TapeMath tracks it as an exact fraction, so it lands dead on the tape mark.

Keep going

3/16" to decimal 15/16" to decimal All fraction sums Add it on the calculator

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