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3/4" + 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.

3/4" + 15/16" =

=1-11/16"

Sum

1-11/16"

Decimal inch

1.6875"

Millimetres

42.8625 mm

3/4" − 15/16"

-0-3/16"

The work

Over a common denominator

Put both over 16: 3/4 = 12/16 and 15/16 = 15/16. Add the tops: 12/16 + 15/16 = 27/16, which carries past one inch. Reduced, that's 1-11/16" (1.6875 inches). TapeMath tracks it as an exact fraction, so it lands dead on the tape mark.

Keep going

3/4" to decimal 15/16" to decimal All fraction sums Add it on the calculator

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