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Math Vocabulary Words in English | Mathematical Words List

If you’re looking for the English names of some of the most common math vocabulary words, you’re in the right place. Check out the most important math vocab to know!

Math Vocabulary Words List

Here is a list of the most common mathematical words. Scroll down to see the pictures!

  • a half (1/2)
  • a quarter (1/4)
  • a third (1/3)
  • center
  • circle
  • combine
  • cone
  • cube
  • curve
  • cylinder
  • diameter
  • divided by
  • equilateral triangle
  • fraction
  • minus
  • parallel lines
  • perpendicular
  • plus
  • pyramid
  • right triangle
  • radius
  • squared
  • straight line
  • sum
  • times whole

You may also want to check out these math riddles for kids.

ESL Maths Vocabulary

Let’s get into the most important words in math that you need to be aware of.

a half (1/2)

a half picture

a quarter (1/4)

a quarter picture

a third (1/3)

a third picture

center

center picture

circle

circle image

combine

combine picture

cone

cone image

cube

cube image

curve

curve image

cylinder

cylinder image

diameter

diameter image

divided by

divided by picture

equilateral triangle

equilateral triangle picture

fraction

fraction picture

minus

minus picture

parallel lines

parallel lines picture

perpendicular

perpendicular lines picture

plus

plus image

pyramid

pyramid image

radius

radius picture

right triangle

right triangle picture

squared

squared picture

straight line

straight line picture

sum

sum image

times

times image

whole

whole image

Do you teach English? Have a look at these fun ideas: ESL Number Activities.

Mathematical Words in English Chart

Check out this handy chart with the most common math vocabulary words in English:

math vocabulary chart

Learn English Vocabulary

Now that you’ve mastered math terminology, it’s time to master some other things. Here are some categories to consider:

  • Sea animals
  • Winter clothes
  • Different types of shoes
  • Shapes
  • Vegetables
  • Fruits
  • Abbreviations

How to Remember Math Vocabulary Words

Looking at this maths vocab list is a good start! But, if you want to really remember new vocabulary, here are a few simple tips:

  • Study vocabulary together with a friend and give each other small tests. This will increase motivation.
  • Try to use new maths vocab as soon as possible. This will help you to remember it.
  • Make some flashcards and study them whenever you have a bit of free time.

Mathematical Words FAQs

There are a number of common questions that people have about math vocabulary words. Here are the answers to some of the most popular ones.

What is the name for a mathematical term that represents a number with both an integer and a fractional part?

It’s called a “decimal.”

What do we call a polygon with five sides?

A polygon with five sides is called a “pentagon.”

What is the term for a number that can only be divided by 1 and itself without leaving a remainder?

Such a number is called a “prime number.”

What is the mathematical term for the point where two lines or line segments intersect?

The point of intersection is called an “intersection point.”

What do we call a three-dimensional figure with six rectangular faces, twelve edges, and eight vertices?

This three-dimensional figure is called a “rectangular prism.”

Math Vocabulary Words in English: Join the Conversation

Do you have any tips or tricks for remembering math terminology? Or, have another mathematical term that you’d like us to add to the list? Leave a comment below and let us know. We’d love to hear from you.

About Jackie

Jackie Bolen has been teaching English for more than 15 years to students in South Korea and Canada. She's taught all ages, levels and kinds of TEFL classes. She holds an MA degree, along with the Celta and Delta English teaching certifications.

Jackie is the author of more than 60 books for English teachers and English learners, including Business English Vocabulary Builder and 39 No-Prep/Low-Prep ESL Speaking Activities for Teenagers and Adults. She loves to share her ESL games, activities, teaching tips, and more with other teachers throughout the world.

You can find her on social media at:
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