Quick Recall - Mathematics

Front

What is the greatest common factor (GCF)?

Back

The greatest common factor (GCF) of two or more numbers is the largest positive integer that divides each of the numbers without leaving a remainder.

Front

How do you find the GCF of 36, 16, and 20?

Back

To find the GCF, list the factors of each number: - Factors of 36: 1, 2, 3, 4, 6, 9, 12, 18, 36 - Factors of 16: 1, 2, 4, 8, 16 - Factors of 20: 1, 2, 4, 5, 10, 20 The common factors are 1, 2, and 4, so the GCF is 4.

Front

What is the Commutative Property of Addition?

Back

The Commutative Property of Addition states that changing the order of the addends does not change the sum. For example, a + b = b + a.

Front

Provide an example of the Commutative Property of Addition.

Back

An example is: 3 + 5 = 5 + 3.

Front

What are supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

If one angle measures 87 degrees, how do you find the measure of its supplementary angle?

Back

To find the supplementary angle, subtract the given angle from 180 degrees: 180 - 87 = 93 degrees.

Front

What is a fraction?

Back

A fraction represents a part of a whole and is expressed as a numerator (top number) over a denominator (bottom number).

Front

How do you add fractions with different denominators?

Back

To add fractions with different denominators, find a common denominator, convert the fractions, and then add the numerators.

Front

What is the total fraction of a candy bar left after sharing?

Back

To find the total fraction left, subtract the total eaten from 1 (the whole): 1 - (1/4 + 1/4 + 1/8) = 3/8.

Front

What is a mathematical expression?

Back

A mathematical expression is a combination of numbers, variables, and operators (such as +, -, *, /) that represents a value.