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 100


Welcome to the journey of learning to write numbers from 1 to 100! This is a very important skill for everyone. Numbers help us count things, tell time, and understand the world around us.

What are the numbers?

Numbers are symbols or words that indicate counting or position. Numbers such as 1, 2 and 3 indicate small quantities or "amounts."

Counting from 1 to 10

Let's start with the basics. Here are the numbers from 1 to 10:

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

When we count, we start at 1 and move forward one digit each time:

1 + 1 = 2 2 + 1 = 3 3 + 1 = 4 4 + 1 = 5 5 + 1 = 6 6 + 1 = 7 7 + 1 = 8 8 + 1 = 9 9 + 1 = 10
1 + 1 = 2 2 + 1 = 3 3 + 1 = 4 4 + 1 = 5 5 + 1 = 6 6 + 1 = 7 7 + 1 = 8 8 + 1 = 9 9 + 1 = 10

Visual example

1 2 3 4 5 6 7 8 9 10

Counting from 11 to 20

Now we continue counting beyond 10. The numbers from 11 to 20 are as follows:

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

After every set of ten numbers, we start a new set. Here's what this looks like with some examples:

10 + 1 = 11 10 + 2 = 12 10 + 3 = 13 10 + 4 = 14 10 + 5 = 15 10 + 6 = 16 10 + 7 = 17 10 + 8 = 18 10 + 9 = 19 10 + 10 = 20
10 + 1 = 11 10 + 2 = 12 10 + 3 = 13 10 + 4 = 14 10 + 5 = 15 10 + 6 = 16 10 + 7 = 17 10 + 8 = 18 10 + 9 = 19 10 + 10 = 20

Visual example

11 12 13 14 15 16 17 18 19 20

Counting from 21 to 30

Now, let's count from 21 to 30:

21, 22, 23, 24, 25, 26, 27, 28, 29, 30

This pattern continues with adding 10:

20 + 1 = 21 20 + 2 = 22 20 + 3 = 23 20 + 4 = 24 20 + 5 = 25 20 + 6 = 26 20 + 7 = 27 20 + 8 = 28 20 + 9 = 29 20 + 10 = 30
20 + 1 = 21 20 + 2 = 22 20 + 3 = 23 20 + 4 = 24 20 + 5 = 25 20 + 6 = 26 20 + 7 = 27 20 + 8 = 28 20 + 9 = 29 20 + 10 = 30

Visual example

21 22 23 24 25 26 27 28 29 30

Continue counting to 100

We continue this process, adding 10 each time to get to the next set of numbers. Here they are, up to 100:

31, 32, 33, 34, 35, 36, 37, 38, 39, 40 41, 42, 43, 44, 45, 46, 47, 48, 49, 50 51, 52, 53, 54, 55, 56, 57, 58, 59, 60 61, 62, 63, 64, 65, 66, 67, 68, 69, 70 71, 72, 73, 74, 75, 76, 77, 78, 79, 80 81, 82, 83, 84, 85, 86, 87, 88, 89, 90 91, 92, 93, 94, 95, 96, 97, 98, 99, 100

Understanding the pattern

When writing numbers, it is important to understand the pattern. In each set of ten, the starting digit changes as you count upward:

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

For each set:

  • 1 to 10 - starts with "1"
  • 11 to 20 - starts with "2"
  • 21 to 30 - starts with "3"
  • And this pattern continues

Tens and ones

Every number has a "tens" and a "units" place:

45 = 4 tens + 5 units
67 = 6 tens + 7 units

This understanding helps a lot in counting and writing numbers.

Practice writing numbers

Try writing the numbers in sets like this:

  1. Write numbers from 1 to 10
  2. Write 11 to 20
  3. Write 21 to 30
  4. and up to 100

Fun with numbers

You can also turn breaking down numbers into fun challenges:

  • Count by 2's: 2, 4, 6, 8, ..., 100
  • Count by 5's: 5, 10, 15, ..., 100
  • Count by 10's: 10, 20, 30, ..., 100

Bringing it together

As you learn and practice, it becomes easier to write the numbers from 1 to 100. Remember, numbers are everywhere, and learning them helps us every day!

Final exercises

Try to write all the numbers from 1 to 100 without stopping. See how quickly and neatly you can do it!


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Writing Numbers 1 to 100

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