LCM, GCF, Order of Operations & Dividing Fractions Flashcard

Front

What is the Least Common Multiple (LCM)?

Back

The LCM of two or more numbers is the smallest multiple that is exactly divisible by each of the numbers.

Front

What is the Greatest Common Factor (GCF)?

Back

The GCF of two or more numbers is the largest number that divides each of the numbers without leaving a remainder.

Front

How do you find the LCM of 5 and 3?

Back

List the multiples of each number: Multiples of 5: 5, 10, 15, 20, ...; Multiples of 3: 3, 6, 9, 12, 15, ...; The LCM is 15.

Front

How do you find the GCF of 30 and 48?

Back

List the factors of each number: Factors of 30: 1, 2, 3, 5, 6, 10, 15, 30; Factors of 48: 1, 2, 3, 4, 6, 8, 12, 16, 24, 48; The GCF is 6.

Front

What is the Order of Operations?

Back

The Order of Operations is a set of rules that determines the sequence in which calculations are performed: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right). This is often remembered by the acronym PEMDAS.

Front

Simplify: 5 - 6^2 ÷ 4 - 3

Back

-7

Front

What is the result of 18 + (6 – 2) × 2?

Back

26

Front

How do you divide fractions?

Back

To divide fractions, multiply the first fraction by the reciprocal of the second fraction. For example, to divide 1/2 by 3/4, you multiply 1/2 by 4/3.

Front

What is a reciprocal?

Back

The reciprocal of a number is 1 divided by that number. For example, the reciprocal of 2 is 1/2.

Front

What is the significance of parentheses in mathematical expressions?

Back

Parentheses indicate which operations should be performed first in an expression, following the Order of Operations.