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11/16" + 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.

11/16" + 15/16" =

=1-5/8"

Sum

1-5/8"

Decimal inch

1.625"

Millimetres

41.275 mm

11/16" − 15/16"

-0-1/4"

The work

Over a common denominator

Put both over 16: 11/16 = 11/16 and 15/16 = 15/16. Add the tops: 11/16 + 15/16 = 26/16, which carries past one inch. Reduced, that's 1-5/8" (1.625 inches). TapeMath tracks it as an exact fraction, so it lands dead on the tape mark.

Keep going

11/16" to decimal 15/16" to decimal All fraction sums Add it on the calculator

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