Welcome to the World of Division!

Hello, Math Explorer! Get ready for an exciting adventure into division. Have you ever shared sweets with your friends to make sure everyone gets the same number? Or have you ever packed your toys into equal bags? If you have, you've already used division!

In Primary 2, we are going to learn how to divide things up fairly using our 2, 3, 4, 5, and 10 times tables. It's a super useful skill that helps us solve problems every day. Let's go step-by-step and have fun along the way!


Section 1: What is Division?

Division is about splitting a total number of items into equal parts. There are two main ways to think about division: equal sharing and equal grouping.

1. Equal Sharing

When you know the number of groups and want to find out how many items are in each group.

Imagine you have 12 yummy cookies to share equally among 3 friends. How many cookies does each friend get?

You give one cookie to each friend, then another, until all 12 are shared. Each friend gets 4 cookies!

We write this as a division sentence:

\(12 \div 3 = 4\)

We read this as: "Twelve divided by three equals four."

2. Equal Grouping

When you know how many items go into each group and want to find out how many groups you can make.

Imagine you have 20 stickers and you put 5 stickers on each card. How many cards can you make?

We write this as:

\(20 \div 5 = 4\)

You can make 4 cards!

Meet the Division Family!

Every division equation has three special parts:

  • Dividend: The total number you start with. (In our cookie example, it was 12).
  • Divisor: The number of groups or the size of each group. (In our cookie example, it was 3).
  • Quotient: The answer! (In our cookie example, it was 4).

Dividend \(\div\) Divisor \(=\) Quotient


Key Takeaway

Division means sharing equally or making equal groups. The total number is the dividend, the number you divide by is the divisor, and the result is the quotient.


Guess what? If you know your multiplication facts, you are already a division star! Multiplication and division are opposite operations that work together in a Fact Family.

Let's look at the numbers 3, 4, and 12:

\(3 \times 4 = 12\)
\(4 \times 3 = 12\)
\(12 \div 3 = 4\)
\(12 \div 4 = 3\)

How to Check Your Division

Whenever you solve a division problem, you can use multiplication to check your work!

Is \(18 \div 2 = 9\) correct?
Check: Does \(9 \times 2 = 18\)? Yes, it does! So your answer is correct.


Key Takeaway

Multiplication and division are closely connected. Knowing your 2, 3, 4, 5, and 10 times tables will help you find division answers quickly and accurately.


Section 3: Division Facts for Primary 2

In Primary 2, we practice dividing numbers within our familiar multiplication tables:

  • Dividing by 2: Halving a number. (Example: \(16 \div 2 = 8\))
  • Dividing by 3: Splitting into 3 equal parts. (Example: \(21 \div 3 = 7\))
  • Dividing by 4: Splitting into 4 equal parts. (Example: \(24 \div 4 = 6\))
  • Dividing by 5: Splitting into groups of 5. (Example: \(35 \div 5 = 7\))
  • Dividing by 10: Splitting into groups of 10. (Example: \(50 \div 10 = 5\))

Did you know?

The division symbol \(\div\) is called an obelus. It looks like a fraction with a dot above and a dot below the line!


Key Takeaway

Practice your 2, 3, 4, 5, and 10 multiplication tables every day—they hold the secret key to solving all your P2 division problems!


Section 4: Solving Division Word Problems

Word problems are division stories from daily life. Look out for important clue phrases like:

  • share equally
  • put equally into
  • how many in each group
  • how many equal groups

Example 1 (Sharing):
Mei Ling has 20 cupcakes. She shares them equally among 4 friends. How many cupcakes does each friend get?

Thinking: We know the total (20) and the number of friends (4). We need to find how many each friend gets.

Equation: \(20 \div 4 = 5\)

Answer: Each friend gets 5 cupcakes.


Example 2 (Grouping):
A baker baked 30 buns. He packs 5 buns into each bag. How many bags does he need?

Thinking: We know the total (30) and the number of buns in each bag (5). We need to find the number of bags.

Equation: \(30 \div 5 = 6\)

Answer: The baker needs 6 bags.


Key Takeaway

Read the question carefully to identify the total number and what you need to find. Write down the division equation and use your multiplication facts to solve it!