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1/16" + 1/4"

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" + 1/4" =

=0-5/16"

Sum

0-5/16"

Decimal inch

0.3125"

Millimetres

7.9375 mm

1/16" − 1/4"

-0-3/16"

The work

Over a common denominator

Put both over 16: 1/16 = 1/16 and 1/4 = 4/16. Add the tops: 1/16 + 4/16 = 5/16. Reduced, that's 0-5/16" (0.3125 inches). TapeMath tracks it as an exact fraction, so it lands dead on the tape mark.

Keep going

1/16" to decimal 1/4" to decimal All fraction sums Add it on the calculator

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