Area

The number of square units that covers a shape or figure.

Denominator

The bottom part of a fraction.

Example: In the fraction ³⁄₄, 4 is the denominator.

Digit

One of the ten numbers 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9.

Example: The number 14 has two digits (1 and 4).

Difference

The result of subtracting one number from another.

Example: The difference between 10 and 2 is 8.

Example: The difference between 5.4 and 8.1 is 2.7.

Divisor

In a division problem, the number that is divided into another.

Example: When dividing 4 into 20, 4 is the divisor since it is used to divide the number 20 into five parts.

Factor

A number that divides evenly into a another number or the numbers being multiplied together to calculate a product.

Example: 4 is a factor of 20 because 4 divides evenly into 20.

Example: In the equation 4 x 5 = 20, 4 and 5 are factors of 20

Fraction

A number expressed in terms of a numerator and denominator and represents part of a whole number.

Example: ¹⁄₂ is a fraction where 1 is the numerator and 2 is the denominator.

Least Common Multiple

The smallest positive number that is evenly divisible by 2 or more numbers.

Example: The Least Common Mulitple of 2 and 9 is 18 since it is the smallest positive number that is evenly divisible by 2 and 9.

Multiples of 2 are: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, ...

Multiples of 9 are: 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99, ...

Smallest positive multiple in both lists: 18

Lowest Common Denominator

The Least Common Multiple of two or more fractions.

Example: The Lowest Common Denominator of ¹⁄₂ and ¹⁄₃ is 6 since the Least Common Multiple of the denominators 2 and 3 is 6.

Numerator

The top part of a fraction.

Example: In the fraction ³⁄₄, 3 is the numerator.

Operation

Any one of the basic arithmetic functions of addition, subtraction, multiplication, or division.

Product

The result of two or more numbers being multiplied together.

Example: When 2 is multiplied by 5, the product is 10.

Example: When 3 is multiplied by 6, the product is 18.

Quotient

The result of dividing one number into another.

Example: When 42 is divided by 7, the quotient is 6.

Example: When 15 is divided by 4, the quotient is 3 and the remainder is 3.

Sum

The result of adding together two or more numbers.

Example: The sum of 2, 5, 7, and 10 is 24.