_The cube of the tens + three times the product of the square of the
tens by the units + three times the product of the tens by the square of
the units + the cube of the units_,
or
tens³ + 3(tens² × units) + 3(tens × units²) + units³.
For graphic illustration the geometrical representation of the cube of
units and tens in the drawings is helpful.
After the process is understood, this short method of writing the work
may be used by the pupil:
EXAMPLE: Find the cube root of .0163956, carrying the root to 3 decimal
places.