Prefixes of number and quantity

A bicycle has _____ wheel/s.

• one

• two

• three

• four

A biannual event happens _____ a year.

• once

• twice

• thrice

• six times

An octagon has _____ sides.

• three

• four

• six

• eight

A semicircle is _____ circle/s.

• one

• two

• three

• half a

A quadrangle has _____ sides.

• four

• five

• six

• eight

A tripod stand has _____ legs.

• one

• two

• three

• four

A unicorn has _____ horn/s.

• one

• two

• three

• six

Quadruplets are _____ children born at one birth.

• two

• three

• four

• five