Numbers from 1 to 9 Chapter Notes | Mathematics Class 1 ICSE PDF Download

Counting 1 to 9

Let's learn how to count numbers from 1 to 9 in different ways.

Ways to Count

• Fingers: Hold up one finger for each count.
  

• Objects: Line up toys or stones and point to each as you say its number name.
  

• Abacus: Move one bead at a time along the first rod, saying each number out loud as you slide it from 1 through 9.
  

One:

Two:

Three:

Four:

Five:

Six: 

Seven: 

Eight: 

Nine:
 

Concept of Zero 

• Zero (0) means “nothing” or “none.”
• If you have 0 apples, it means there are no apples.
• We write 0 when there is nothing to count.

Here are some examples: 
Example: 1

Example: 2

Bigger or Smaller 

Look at the examples below. Just like animals or objects, numbers are also bigger or smaller.

When we compare two numbers:

• The larger number is bigger.
• The smaller number is smaller.
• 2 is smaller than 3, because 2 comes first in counting than 3. 
• 7 is bigger than 4, because 7 comes later in counting than 4.

More or Less 

“More” means a greater amount; “Less” means a smaller amount.

If Priya has 5 candies and Rahul has 2 candies:

• Priya has more candies.
• Rahul has less candies.

Note: 

Examples: 

Tip:

Equal 

• When two groups have the same number of things, they are equal.
• Example: 4 blocks and 4 stones are equal because both groups have 4 items each.
• Here are some more examples: 

Before, After, Between 

Before: the number that comes just before another.

• Before 5 is 4.

After: the number that comes just after another.

• After 5 is 6.

Between: the number that comes in the middle of two numbers.

• Between 2 and 4 is 3.

Ordering

Ascending order: writing numbers from smallest to biggest.

• Example: 1, 2, 3, 4, 5, 6, 7, 8, 9

Descending order: writing numbers from biggest to smallest.

• Example: 9, 8, 7, 6, 5, 4, 3, 2, 1

Well done!

• You now know numbers 1–9, zero, and how to compare and order them.
• Keep counting your toys, snacks, and crayons every day—and have fun with numbers!