Master English Numbers: A Simple Guide to Counting and Math

Numbers play a crucial role beyond just mathematics; they are essential in English for quantifying, measuring, and conveying numerical information. We encounter numbers in our daily lives through calendars, to-do lists, recipes, and even when discussing ages, highlighting their importance in organizing and simplifying our activities.

Although this may not resemble a standard online English lesson, understanding numbers is crucial for calculations and clear communication in English. Moreover, studies show that individuals with stronger numeracy skills are more likely to make sound financial decisions. This highlights an excellent opportunity to enhance your number skills!

In this guide, we will explore numbers in English, their usage, and practical applications.

Counting basics

The number sequence from 1 to 10

Counting is the foundation of numerical comprehension. Let’s start by reviewing numbers 1 to 10 with their English spellings.

Numbers	English spelling	Pronunciation
1	One	/wuhn/
2	Two	/too/
3	Three	/three/
4	Four	/fohr/
5	Five	/faɪv/
6	Six	/sihks/
7	Seven	/SEH-vihn/
8	Eight	/ayt/
9	Nine	/naɪn/
10	Ten	/tehn/

Counting in multiples

In mathematics, a multiple is the result of multiplying a number by an integer. For instance, when you multiply 5 by 6, the product is 30. Thus, 30 is considered a multiple of both 5 and 6.

Other multiples of five are:

10, 15, 20, 25, 30, 35, etc.

Other multiples of six are:

12, 18, 24, 30, 36, 43, etc.

Multiples of 10 are:

10, 20, 30, 40, 50, 60, 70, 80, 90, 100, etc.

Cardinal numbers

Understanding cardinal numbers and their usage

Cardinal numbers are generally used for counting and expressing quantities. They are often used to:

• Give your age in years: “I’m 26 years old.”
• Give your telephone number: “My phone number is five-five-five-six-four-three-two.”

 

When writing in English, it’s best to spell out cardinal numbers one to nine. For example:

• “I have two siblings.”
• “I bought eight books for my brother.”

 

Meanwhile, the Chicago Manual of Style suggests using numerals to express large numbers (10 and above). For example:

• “There are 11 students in the class.”
• “About 101 people signed up for the training.”

Counting beyond 10: 11 to 20

Numbers from 11 to 20 often have unique names and patterns. They are:

• 11 – Eleven – /ih-LEV-uhn/
• 12 – Twelve – /twehl-VE/
• 13 – Thirteen – /thr-TEEN/
• 14 – Fourteen – /fohr-TEEN/
• 15 – Fifteen – /fihf-TEEN/
• 16 – Sixteen – /siks-TEEN/
• 17 – Seventeen – /seh-vihn-TEEN/
• 18 – Eighteen – /ayt-TEEN/
• 19 – Nineteen – /nain-TEEN/
• 20 – Twenty – /TWEN-tee/

 

The suffix “teen” originates from the word “ten,” signifying an addition of ten. For instance, “nineteen” represents nine plus ten, while “fifteen” is five plus ten. This simple linguistic connection helps us understand how numbers from thirteen to nineteen are formed!

Counting by tens: 20 to 100

Numbers from 20 to 100 are created by blending tens with ones, and they are pronounced smoothly without any pauses. Below is a list of cardinal numbers in English that fall between 20 and 100:

• 21 – Twenty-one – /twehn-tee-WUHN/
• 22 – Twenty-two – /twehn-tee-TOO/
• 23 – Twenty-three – /twehn-tee-THREE/
• 24 – Twenty-four – /twehn-tee-FOHR/
• 25 – Twenty-five – /twehn-tee-FAIV/
• 26 – Twenty-six – /twehn-tee-SIKS/
• 27 – Twenty-seven – /twehn-tee-SEH-vihn/
• 28 – Twenty-eight – /twehn-tee-AYT/
• 29 – Twenty-nine – /twehn-tee-NAIN/

 

• 30 – Thirty – /THR-tee/
• 40 – Forty – /FOHR-tee/
• 50 – Fifty – /FIF-tee/
• 60 – Sixty – /SIKS-tee/
• 70 – Seventy – /SEV-vihn/tee/
• 80 – Eighty – /AY-tee/
• 90 – Ninety – /NAIN-tee/
• 100 – One hundred or hundred – /wuhn-HUN-druhd/

 

Important: Pay attention to the use of hyphens in the written forms of numbers 21 to 29, as they connect the two digits. This rule applies similarly to the numbers 31 through 99 when they are spelled out.

Counting in hundreds and thousands

Having mastered counting from one to 100 in English, it’s time to expand your skills to larger figures in the hundreds and thousands. Below, you’ll find a handy list of numbers in both hundreds and thousands, complete with their English spellings to guide you.

Hundreds	English spelling	Pronunciation
100	One hundred	/wuhn-HUN-druhd/
200	Two hundred	/too-HUN-druhd/
300	Three hundred	/three-HUN-druhd/
400	Four hundred	/fohr-HUN-druhd/
500	Five hundred	/faiv-HUN-druhd/
600	Six hundred	/siks-HUN-druhd/
700	Seven hundred	/seh-vihn-HUN-druhd/
800	Eight hundred	/ayt-HUN-druhd/
900	Nine hundred	/nain-HUN-druhd/

 

Thousands	English spelling
1,000	One thousand	/wuhn-THAU-zend/
2,000	Two thousand	/too-THAU-zend/
3,000	Three thousand	/three-THAU-zend/
4,000	Four thousand	/fohr-THAU-zend/
5,000	Five thousand	/faiv-THAU-zend/
6,000	Six thousand	/siks-THAU-zend/
7,000	Seven thousand	/seh-vinh-THAU-zend/
8,000	Eight thousand	/ayt-THAU-zend/
9,000	Nine thousand	/nain-THAU-zend/

Now, continuing with the pattern:

10,000	Ten thousand	/tehn-THAU-zend/
11,000	Eleven thousand	/ih-LEH-uhn-THAU-zend/
12,000	Twelve thousand	/twehl-ve-THAU-zend/
13,000	Thirteen thousand	/thr-teen-THAU-zend/
14,000	Fourteen thousand	/fohr-teen-THAU-zend/
15,000	Fifteen thousand	/fihf-teen-THAU-zend/
16,000	Sixteen thousand	/siks-teen-THAU-zend/
17,000	Seventeen thousand	/seh-vihn-teen-THAU-zend/
18,000	Eighteen thousand	/ayt-teen-THAU-zend/
19,000	Nineteen thousand	/nain-teen-THAU-zend/
20,000	Twenty thousand	/twen-tee-THAU-zend/
30,000	Thirty thousand	/thr-tee-THAU-zend/
40,000	Forty thousand	/fohr-tee-THAU-zend/
50,000	Fifty thousand	/fif-tee-THAU-zend/
60,000	Sixty thousand	/siks-tee-THAU-zend/
70,000	Seventy thousand	/seh-vihn-tee-THAU-zend/
80,000	Eighty thousand	/ayt-tee-THAU-zend/
90,000	Ninety thousand	/nain-tee-THAU-zend/
100,000	One hundred thousand	/wuhn-hun-druhd-THAU-zend/

Ordinal numbers

Definition and usage of ordinal numbers

Ordinal numbers in English indicate sequence and position. To form them, simply add “th” to the end of a cardinal number. You use these numbers when you want to:

• Give a date in the calendar: “My birthday is on the 26th of next month.”
• Put things in order: “He is the fifth on the list.”
• Refer to centuries: “The museum was established in the 18th century.”
• Refer to a floor of a building: “My office is on the 10th floor.”

Forming ordinal numbers from cardinal numbers

As previously noted, we typically create ordinal numbers by attaching the suffix “th” to cardinal numbers. Below is a helpful list of ordinal numbers for your reference:

• 1st – First
• 2nd – Second
• 3rd – Third
• 4th – Fourth
• 5th – Fifth
• 6th – Sixth
• 7th – Seventh
• 8th – Eighth
• 9th – Ninth
• 10th – Tenth
• 11th – Eleventh
• 12th – Twelfth
• 13th – Thirteenth
• 14th – Fourteenth
• 15th – Fifteenth
• 16th – Sixteenth
• 17th – Seventeenth
• 18th – Eighteenth
• 19th – Nineteenth
• 20th – Twentieth
• 21st – Twenty-first
• 22nd – Twenty-second
• 23rd – Twenty-third

 

• 30th – Thirtieth
• 40th – Fortieth
• 50th – Fiftieth
• 60th – Sixtieth
• 70th – Seventieth
• 80th – Eightieth
• 90th – Ninetieth
• 100th – Hundredth

 

When writing out large numbers in ordinals, we change the last numeral to an ordinal number. For example:

• 104th – One hundred fourth
• 287 – Two hundred eighty-seventh

Common exceptions among ordinal numbers

Notice that most of the numbers above end with “th,” except:

• First, which ends with “st”
• Second, which ends with “nd”
• Third, which ends with “rd”

 

Ordinal numbers typically follow a regular pattern, but “first,” “second,” and “third” stand out as exceptions. Unlike most ordinal numbers that end in “th,” these three have unique, irregular forms.

Using ordinal numbers in sentences

Now that you know what ordinal numbers are, let’s put them into practice. Here are some examples:

• “I was the first person to come to school today.”
• “He won the seventh tennis game in a row.”
• “My school will celebrate its 50th anniversary next month.”

Fractions and decimals

Introduction to fractions and decimals

Fractions and decimals are vital tools for expressing values and proportions with accuracy. These concepts elegantly illustrate parts of a whole or numbers that exist between whole numbers, enabling us to work with partial quantities seamlessly.

Common fractions and their representation

Fractions are made up of two key components: the numerator and the denominator, which are divided by a slash (/). The numerator indicates how many parts we possess, while the denominator shows the total number of equal parts that constitute the whole.

In the fraction 3/4, the number three on top, known as the numerator, tells us that we have three parts. Meanwhile, the number four on the bottom, called the denominator, shows that the whole is divided into four equal sections.

Let’s explore common fractions and how to represent them correctly in English:

Common fractions	English name
1/2	One half
1/3	One third
1/4	One quarter
2/3	Two thirds
3/5	Three fifths

Note: When reading fractions, we use the cardinal number as the numerator and the ordinal number as the denominator.

Decimal numbers and their usage

Decimal numbers are essential in our daily lives, especially in areas like finance, measurements, and scientific computations. Unlike whole numbers, decimals include a decimal point, as seen in examples like 0.002, 0.03, and 0.95. Understanding decimals is crucial for accurately handling money and data in various contexts.

Decimal numbers are pronounced by listing each digit. Examples are:

• 0.1201: Zero point one two zero one, or point one two zero one
• 7.5: Seven point five
• 0.317: Zero point three one seven, or point three one seven

 

For clarity, it is best to write decimal numbers as numerals. Let’s look at some examples:

• “The tomatoes I bought weigh 74.5 grams.”
• “Seven divided by two is 3.5.”

Converting between fractions and decimals

Fractions and decimals are interconnected and can easily be transformed from one form to the other. To convert a fraction to a decimal, simply divide the numerator by the denominator. For instance, when you divide 3 by 4, you get 0.75, demonstrating that 3/4 is equivalent to 0.75 in decimal form.

Converting a decimal to a fraction is straightforward! Start by determining the place value of the last digit in the decimal. This value becomes the numerator, while a power of 10 represents the denominator. For instance, the decimal 0.75 translates to 75/100. When simplified, this fraction becomes 3/4.

Large numbers

Exploring large numbers in English

Large figures, including millions, billions, and trillions, frequently appear in discussions around finance and economics, often illustrating concepts like national debt, gross domestic product (GDP), and corporate revenues. These impressive numbers are also essential in demographic data, helping to convey the size of populations accurately.

Large numbers are formed by adding specific suffixes to the base numbers. Let’s look at some examples:

• Million (six zeros): 1,000,000 (one million)
• Billion (nine zeros): 1,000,000,000 (one billion)
• Trillion (12 zeros): 1,000,000,000,000 (one trillion)
• Quadrillion (15 zeros): 1,000,000,000,000,000 (one quadrillion)
• Quintillion (18 zeros): 1,000,000,000,000,000,000 (one quintillion)

Reading and pronouncing large numbers correctly

Reading large numbers in English can be daunting at first, but with a bit of practice, it becomes second nature. Here are some helpful tips to improve your reading and pronunciation of big numbers:

1. Simplifying large numbers: Dividing large numbers into smaller, manageable groups can make them easier to read and understand. In English, we usually separate numbers into sets of three digits using commas. For instance:

• 1,234,567,890 (one billion, two hundred thirty-four million, five hundred sixty-seven thousand, eight hundred ninety)

 

2. Understanding Large Numbers: To determine whether a number is in the millions, billions, or trillions, start by counting the digits following the first numeral. Additionally, it’s helpful to learn the correct terms associated with these large numbers to enhance your numerical literacy.

Let’s take the number 5,000,000,000,000 as an example:

There are 12 zeros behind the number, which makes it a trillion. So, we write it as five trillion.

Pronunciation: /faɪv ˈtrɪl.jən/

Mathematical expressions

Basic mathematical operations

The fundamental mathematical operations include addition, subtraction, multiplication, and division. In this section, we will delve into the definitions of each operation and demonstrate how to effectively use them in English.

Addition

Addition is the process of bringing together two or more numbers to calculate their total. In English, we often use the term “plus” or the symbol “+” to signify this operation.

Examples:

• 3 + 5 = 8
• English expression: Three plus five equals eight.

 

• 12 + 20 = 32
• English expression: Twelve plus twenty equals thirty-two.

Subtraction

Subtraction is the method of determining the difference between two numbers. In English, we indicate subtraction by using the word “minus” or the symbol “-“.

Examples:

• 10 – 4 = 6
• English expression: Ten minus four equals six.

 

• 25 – 15 = 10
• English expression: Twenty-five minus fifteen equals ten.

Multiplication

Multiplication is the process of repeated addition. In English, we express multiplication using the word “multiply” and “times” or the “×” symbol.

Examples:

• 2 × 3 = 6
• English expression: Two multiplied by three equals six.

 

• 5 × 4 = 20
• English expression: Five times four equals twenty.

Division

Division is the process of sharing a quantity equally into several parts. In English, we express division using “divide” or the “÷” symbol.

Examples:

• 12 ÷ 3 = 4
• English expression: Twelve divided by three equals four.

 

• 30 ÷ 5 = 6
• English expression: Thirty divided by five equals six.

Solving simple word problems using English expressions

Now, let’s apply our knowledge of basic mathematical operations to solve simple word problems using English expressions.

Example 1: Mary had seven apples, and John gave her three more apples. How many apples does Mary have now?

Solution: Mary had seven apples, and John gave her three more apples, so we perform addition:

7 + 3 = 10

Mary has 10 apples now.

 

Example 2: Imagine a store stocked with 20 delicious candies. After selling five of them, can you figure out how many sweet treats remain on the shelves?

Solution: The store had 20 candies, and five candies were sold, so we performed subtraction:

20 – 5 = 15

There are 15 candies left in the store.

Conclusion

Understanding numbers in English is essential for clear communication and effective problem-solving, whether in everyday situations or more challenging professional contexts. The encouraging part is that you’re likely already familiar with many of the concepts discussed here, as we interact with numbers regularly. By practicing and engaging with numerical concepts, you can unlock the benefits of mathematics in your daily life.

Are you finding these math lessons challenging? Don’t worry! You can turn to resources like LingualNeeds for tailored instruction that meets your needs. With thousands of online math tutors available, you can book personalized 1-on-1 classes to enhance your skills. Plus, LingualNeeds offers tutors in a variety of subjects, all at budget-friendly prices, ensuring you get the help you need without breaking the bank.

Sign up on LingualNeeds today to take personalized classes from experienced tutors and native speakers.