Grade 1
  1. Numbers and Counting  1.1. Counting to 10  1.2. Counting to 20  1.3. Counting to 50  1.4. Counting to 100  1.5. Writing Numbers 1 to 10  1.6. Writing Numbers 1 to 20  1.7. Writing Numbers 1 to 50  1.8. Writing Numbers 1 to 100  1.9. Reading Numbers 1 to 10  1.10. Reading Numbers 1 to 20  1.11. Reading Numbers 1 to 50  1.12. Reading Numbers 1 to 100  1.13. Comparing Numbers  1.14. Ordering Numbers  1.15. Odd and Even Numbers  1.16. Number Patterns  1.17. Skip Counting by 2s, 5s, and 10s  1.18. Understanding Zero
  2. Basic Addition and Subtraction  2.1. Understanding Addition  2.2. Addition Facts within 10  2.3. Addition Facts within 20  2.4. Adding Zero  2.5. Adding One More  2.6. Adding Two More  2.7. Adding Three More  2.8. Adding Using Pictures  2.9. Addition Word Problems  2.10. Understanding Subtraction  2.11. Subtraction Facts within 10  2.12. Subtraction Facts within 20  2.13. Subtracting Zero  2.14. Subtracting One  2.15. Subtracting Two  2.16. Subtraction Using Pictures  2.17. Subtraction Word Problems  2.18. Introduction to Doubles Facts  2.19. Introduction to Making 10
  3. Place Value and Number Sense  3.1. Understanding Tens and Ones  3.2. Counting by Tens  3.3. Place Value within 20  3.4. Place Value within 50  3.5. Place Value within 100  3.6. Reading and Writing Two-Digit Numbers  3.7. Comparing Two-Digit Numbers  3.8. Decomposing Numbers
  4. Measurement  4.1. Length  4.1.1. Comparing Lengths  4.1.2. Measuring with Non-Standard Units  4.1.3. Using Standard Units (Inches and Centimeters) in Length  4.2. Weight  4.2.1. Comparing Weights  4.2.2. Heavy and Light Objects  4.2.3. Introduction to Grams and Pounds  4.3. Capacity  4.3.1. Comparing Capacity  4.3.2. Full and Empty  4.3.3. Introduction to Liters and Milliliters  4.4. Time  4.4.1. Telling Time to the Hour  4.4.2. Telling Time to the Half Hour  4.4.3. Days of the Week  4.4.4. Months of the Year  4.4.5. Understanding Yesterday, Today, and Tomorrow  4.5. Money  4.5.1. Recognizing Coins  4.5.2. Counting Coins  4.5.3. Introduction to Dollar and Cents Symbols  4.5.4. Simple Addition and Subtraction with Money
  5. Geometry  5.1. 2D Shapes  5.1.1. Recognizing 2D Shapes  5.1.2. Drawing 2D Shapes  5.1.3. Naming 2D Shapes  5.1.4. Properties of 2D Shapes  5.1.5. Sorting 2D Shapes  5.1.6. Composing Simple Shapes  5.2. 3D Shapes  5.2.1. Recognizing 3D Shapes  5.2.2. Naming 3D Shapes  5.2.3. Properties of 3D Shapes  5.2.4. Sorting 3D Shapes  5.3. Position and Direction  5.3.1. Left and Right  5.3.2. Above and Below  5.3.3. Inside and Outside  5.3.4. Near and Far  5.3.5. In Front and Behind
  6. Patterns and Sorting  6.1. Recognizing Patterns  6.2. Extending Patterns  6.3. Creating Patterns  6.4. Sorting by Color  6.5. Sorting by Shape  6.6. Sorting by Size
  7. Data and Graphing  7.1. Introduction to Data  7.2. Collecting Data  7.3. Tally Marks  7.4. Bar Graphs  7.5. Picture Graphs  7.6. Interpreting Simple Graphs
  8. Fractions  8.1. Understanding Halves  8.2. Understanding Fourths  8.3. Dividing Shapes into Equal Parts  8.4. Identifying Equal and Unequal Parts

Grade 1 → Numbers and Counting ↓


Writing Numbers 1 to 20


Numbers are all around us, and they are very important in our daily lives. Learning to write numbers from 1 to 20 is one of the very first steps to understanding math. In this guide, we will explore how to write these numbers and how to count them. We will use simple language to help young learners understand these basic concepts easily.

Understanding the numbers

Numbers are symbols we use to count, measure, and label things. Writing numbers is an important skill that helps us organize and communicate information.

Why learn to write numbers?

Understanding how numbers are written is important as it helps us in many areas such as:

  • Counting objects like toys or fruits.
  • Understanding time is like looking at a clock.
  • Knowing the dates on the calendar.
  • Understanding money transactions and prices.

Writing numbers 1 to 10

We'll start with the numbers 1 to 10. These are the first numbers you'll learn, and they form the basis for understanding larger numbers.

Number 1

The number 1 is the first number. It represents a single object or entity.

1
1

Number 2

The number 2 is the next number. It represents one or two items.

2
2

Number 3

Three is the number after 2. It represents three objects.

3
3

Number four

Four is the number that comes after 3.

4
4

Number 5

Five comes after four and represents five objects.

5
5

Number 6

Six is the number after 5.

6
6

Number 7

Seven is the number that comes after 6.

7
7

Number 8

Eight comes after seven.

8
8

Number 9

Nine is immediately after eight.

9
9

Number 10

Ten is the number that completes the first group of numbers.

10
10

Writing numbers 11 to 20

Now, let's move on to numbers 11 to 20. These numbers pick up where we left off and introduce some new concepts.

Number 11

Eleven is one more than ten.

11
11

Number 12

Twelve is one more than eleven.

12
12

Number 13

Thirteen is written by writing the number 1 followed by 3.

13
13

Number 14

Fourteen is the number that comes after thirteen.

14
14

Number 15

Fifteen comes after fourteen.

15
15

Number 16

Sixteen is one more than fifteen.

16
16

Number 17

Seventeen is written by writing a 1 followed by a 7.

17
17

Number 18

Eighteen is one more than seventeen.

18
18

Number 19

Nineteen is just before twenty.

19
19

Number 20

Twenty symbolizes the completion of writing the numbers in this series.

20
20

Count to 20

Now that we've learned how to write the numbers from 1 to 20, let's practice counting them. Counting is simply putting the numbers in order.

Counting example

Let's count from 1 to 10:

1, 2, 3, 4, 5, 6, 7, 8, 9, 10

Now, let's count from 11 to 20:

11, 12, 13, 14, 15, 16, 17, 18, 19, 20

Practice writing

Practice is a must when learning to write numbers. Here's how you can practice writing numbers from 1 to 20.

  1. Take a blank paper.
  2. Write each number from 1 to 20 one after the other.
  3. When writing the number, say it out loud.

Use of numbers

Using numbers can be fun! Here are some simple activities to help you practice.

Counting objects

Find some items around your home, such as:

  • Books
  • Pencil
  • Toys

Try counting them and write down the number of each item.

Number patterns

Try to find patterns in the numbers. For example, when you count by twos, you skip every other number:

2, 4, 6, 8, 10, 12, 14, 16, 18, 20

Conclusion

Learning to write the numbers 1 to 20 is a great start to your math journey. These numbers are the building blocks for many other math skills. Keep practicing and have fun with counting activities!


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Writing Numbers 1 to 20

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