An equation is a statement that shows two mathematical expressions as equal. For example, 2 + 2 = 4 is an equation, and Kmax = hfΦ is an equation.

In this lesson, we’ll learn the basics of reading equations aloud. More detailed information for specific types of math will also be included in later units.

Addition, Subtraction, Multiplication and Division

In English, we use different words when we talk about math than we use to read equations aloud.

Talking about math Reading and writing equations
Nouns Verbs
Addition Add
Subtraction Subtract
Multiplication Multiply
Division Divide
Talking about math Reading and writing equations
Symbols Word used when reading an equation
+ plus
- minus
× or · times
÷ or / divided by

Examples

  • Today, we are going to practice addition.
  • If you multiply instead of divide, you will get the incorrect answer.
  • Two plus two equals four. (2 + 2 = 4)

Exponents

In 54, the number 5 is the base, and the number 4 is the exponent. We read this number aloud as “five to the fourth power.”

In other words, we say [base], + “to the” + exponent (as an ordinal number) + [power]. Examine these examples.

85 Eight to the fifth power
9n Nine to the nth power
6x-3 Six to the x minus third power
y4 Y to the fourth power

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