dividend

The number in division that is being divided

ex:
35 / 5 = 7 (the dividend is 35)

Divisor

In division, the number that divides another number,

ex
35 / 7 = 5 (divisor is 7)

fact family

A set of related arithmetic facts linking two inverse operations.

Ex.                  

5+6=11
6+5=11

11-6=5

11-5=6

factor pair

Two factors of a counting number.

Ex:
18 (1 and 18) (2 and 9) and (3 and 6)

20 (1 and 20) (2 and 10) and (4 and 5)

Factor

1) each of the 2 or more numbers in a

product 6 * 5 = 30
2) To represent a number as a       

product of factors (21) 7 * 3