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1/16" + 13/16"

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

1/16" + 13/16" =

=0-7/8"

Sum

0-7/8"

Decimal inch

0.875"

Millimetres

22.225 mm

1/16" − 13/16"

-0-3/4"

The work

Over a common denominator

Put both over 16: 1/16 = 1/16 and 13/16 = 13/16. Add the tops: 1/16 + 13/16 = 14/16. Reduced, that's 0-7/8" (0.875 inches). TapeMath tracks it as an exact fraction, so it lands dead on the tape mark.

Keep going

1/16" to decimal 13/16" to decimal All fraction sums Add it on the calculator

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