Song library

Addition

Addition: Definition: Is finding the total, or sum, by combining two or more numbers. HOW TO: 6 + 12 + 4 = 22 Khan Link: https://www.khanacademy.org/math/arithmetic/arith-review-add-subtract/arith-review-basic-add-subtract/v/basic-addition

Expressions

DEFINITION: An algebraic expression is a mathematical phrase that can contain ordinary numbers, variables (like x or y) and operators (like add,subtract,multiply, and divide) HOW TO: A + 1 3 + 4b Y = mx + b Everyday Use: Null

Factors

DEFINITION: Factors are numbers you can multiply together to get another number. HOW TO: How It Works: For example, The factors of the number 6 include 2 and 3, because 2 multiplied by 3 equals 6 6 = 2 x 3 The factors of the number 12 include 3 and 4 12 = 3 x 4 Everyday Use: Factoring can be used in everyday life. For example, if you ever use a computer, smart phone, or tablet, the information is secured by complicated factoring formulas to make it harder for people to steal information online.

Irrational Rational Numbers

Rational and Irrational numbers Definitions: A rational number is part of a whole expressed as a fraction, decimal or a percentage. ... It is a number that cannot be written as a ratio of two integers (or cannot be expressed as a fraction). HOW TO: The square root of 2 is an irrational number because it cannot be written as a ratio of two integers. Khan Link: https://www.khanacademy.org/math/algebra/rational-and-irrational-numbers/alg-1-irrational-numbers/v/recognizing-irrational-numbers

Subtraction