Numbers

Numbers are special symbols that represent quantities. When you count your candies or toys, you are actually using numbers to figure out how many you have. Numbers help us compare things and tell us if something is more or less.

Numbers

Numbers are like building blocks in math. We use them to count, measure and see how things compare to each other.

There are four basic math operations. We can do operations on numbers such as addition, subtraction, multiplication and division.

Addition

The addition is like putting things together. When you add, you are combining numbers to find a total. It is when we take two or more numbers and combine them.
It is represented using the ‘+’ symbol.

Examples:

If we add 4 and 3, we count using fingers to get a result of 7.

Imagine you have 4 biscuits in one jar and 3 biscuits in a different jar. How many biscuits do you have in total when you put them all together?

Addition: 4 + 3 = 7

Hence, there are 7 biscuits altogether.

Suppose you have 8 apples on one branch and 6 apples on another branch. How many apples do you have in total when you put them all together?

Hence, there are 14 apples in total.

If there are 5 monkeys in one group and 6 monkeys in another group. How many monkeys are there in total when they are all together?

Addition: 5 + 6 = 11

Hence, there are 11 monkeys.

Subtraction

Subtraction is like removing things which means taking away. It is the opposite of adding. When we subtract, we take the smaller number away from the larger number.
It is represented using the ‘−’ symbol.

Examples:

Suppose you have 5 chocolates and you decide to give 3 chocolates to your younger brother. How many chocolates do you still have?

Hence, he still has 2 chocolates.

If you have 9 ice-creams and you decide to give 4 ice-creams to your best friends. How many ice-creams do you still have?

Hence, he still has 5 ice-creams.

Imagine you have 10 bowls and 4 bowls are broken. How many bowls are still left?

Subtraction: 10 − 4 = 6

Hence, there are 6 bowls still left.

Number Names 1 to 50

Before, After and Between Numbers

Before Number: It is like taking one step back in a counting order. This number is smaller in value than the given number.

After Number: It is like taking one step forward in a counting order. This number is greater in value than the given number.

Between Number: It is like finding the middle number between two numbers.

Examples:

7 is the before number, 8 is the between number and 9 is the after number.

9 is the before number, 10 is the between number and 11 is the after number.

16 is the before number, 17 is the between number and 18 is the after number.

Skip Counting

Skip counting is a way to count numbers by adding a specific number each time to the number you had before. So, we are kind of skipping numbers in between.

Skip Counting by 2

Skip counting by 2 means that we are going to practice jumping by two which means we will add two each time and write down the numbers as we go.

Example of Skip counting by 2:

This can be explained as

Skip Counting by 5

Skip counting by 5 means that we are going to practice jumping by five which means we will add five each time and write down the numbers as we go.

Example of Skip counting by 5:

This can be explained as: