Can We Share?
What is Division?
DIVISION means SHARING EQUALLY or GROUPING EQUALLY.
- 12 sweets shared among 4 friends: How many does EACH get?
- 20 students sitting in 5 rows: How many in EACH row?
When we divide, we SPLIT a number into EQUAL parts.
Equal Sharing
Example 1: Sharing Sweets
Mama brings 12 sweets for Riya and her 3 friends (4 children in total).
Question: How many sweets does EACH child get?
Solution: 12 ÷ 4 = 3 Each child gets 3 sweets.
Check: 3 + 3 + 3 + 3 = 12 ✓
Example 2: Sharing Chapatis
Grandma made 15 chapatis for 5 people.
Question: How many chapatis does EACH person get?
Solution: 15 ÷ 5 = 3 Each person gets 3 chapatis.
Check: 3 × 5 = 15 ✓
Example 3: Sharing Books
The school library has 20 new books to share equally among 4 classes.
Question: How many books does EACH class get?
Solution: 20 ÷ 4 = 5 Each class gets 5 books.
Division as Repeated Subtraction
Division can be thought of as REPEATED SUBTRACTION.
Example: 12 ÷ 4
Start with 12. Subtract 4 repeatedly until you reach 0.
| Step | Calculation | Remaining |
|---|---|---|
| 1 | 12 - 4 = 8 | 8 |
| 2 | 8 - 4 = 4 | 4 |
| 3 | 4 - 4 = 0 | 0 |
We subtracted 4 THREE times. So 12 ÷ 4 = 3.
Practice: 15 ÷ 5
| Step | Calculation | Remaining |
|---|---|---|
| 1 | 15 - 5 = 10 | 10 |
| 2 | 10 - 5 = 5 | 5 |
| 3 | 5 - 5 = 0 | 0 |
We subtracted 5 THREE times. So 15 ÷ 5 = 3.
Division Notation
Different Ways to Write Division
- 12 ÷ 4 = 3
- 12 / 4 = 3
-
- 12 (3
Parts of Division
| Term | Meaning | Example |
|---|---|---|
| Dividend | The number being divided | 12 |
| Divisor | The number we are dividing by | 4 |
| Quotient | The answer | 3 |
In 12 ÷ 4 = 3:
- 12 is the DIVIDEND
- 4 is the DIVISOR
- 3 is the QUOTIENT
Relationship with Multiplication
Division and Multiplication are OPPOSITE operations (they are INVERSE of each other).
Fact Families
If 3 × 4 = 12, then:
- 12 ÷ 3 = 4
- 12 ÷ 4 = 3
More Fact Families
| Multiplication | Division (1) | Division (2) |
|---|---|---|
| 2 × 5 = 10 | 10 ÷ 2 = 5 | 10 ÷ 5 = 2 |
| 4 × 3 = 12 | 12 ÷ 4 = 3 | 12 ÷ 3 = 4 |
| 5 × 6 = 30 | 30 ÷ 5 = 6 | 30 ÷ 6 = 5 |
| 7 × 2 = 14 | 14 ÷ 7 = 2 | 14 ÷ 2 = 7 |
| 8 × 4 = 32 | 32 ÷ 8 = 4 | 32 ÷ 4 = 8 |
Key Rule: To check division, MULTIPLY the quotient by the divisor. You should get the dividend.
Division Tables (1 to 10)
| Table | Divisions |
|---|---|
| 2 | 2÷2=1, 4÷2=2, 6÷2=3, 8÷2=4, 10÷2=5, 12÷2=6, 14÷2=7, 16÷2=8, 18÷2=9, 20÷2=10 |
| 3 | 3÷3=1, 6÷3=2, 9÷3=3, 12÷3=4, 15÷3=5, 18÷3=6, 21÷3=7, 24÷3=8, 27÷3=9, 30÷3=10 |
| 4 | 4÷4=1, 8÷4=2, 12÷4=3, 16÷4=4, 20÷4=5, 24÷4=6, 28÷4=7, 32÷4=8, 36÷4=9, 40÷4=10 |
| 5 | 5÷5=1, 10÷5=2, 15÷5=3, 20÷5=4, 25÷5=5, 30÷5=6, 35÷5=7, 40÷5=8, 45÷5=9, 50÷5=10 |
| 10 | 10÷10=1, 20÷10=2, 30÷10=3, 40÷10=4, 50÷10=5, 60÷10=6, 70÷10=7, 80÷10=8, 90÷10=9, 100÷10=10 |
Word Problems
Problem 1: Sharing Mangoes
A farmer has 24 mangoes. He puts them equally into 6 baskets. How many mangoes in each basket?
Solution: 24 ÷ 6 = 4 mangoes per basket
Problem 2: Team Formation
There are 30 students in a class. The teacher divides them into groups of 5. How many groups?
Solution: 30 ÷ 5 = 6 groups
Problem 3: Pencil Distribution
A pack has 12 pencils. Riya wants to share them equally among 3 friends and herself (4 people). How many pencils does each get?
Solution: 12 ÷ 4 = 3 pencils each
Problem 4: Bus Seats
A school bus has 40 seats. Each bench seats 2 students. How many benches?
Solution: 40 ÷ 2 = 20 benches
Problem 5: Biscuits
A packet of biscuits has 18 biscuits. Ravi eats 3 biscuits each day. How many days will the packet last?
Solution: 18 ÷ 3 = 6 days
Problem 6: Plant Saplings
A gardener has 36 saplings. He plants them in rows of 6. How many rows?
Solution: 36 ÷ 6 = 6 rows
Division with Remainder
Sometimes division does NOT work out exactly. We get a REMAINDER.
Example: 13 ÷ 4
Think: How many groups of 4 in 13?
- 4 × 3 = 12 (3 groups of 4 = 12)
- 13 - 12 = 1 (1 left over)
13 ÷ 4 = 3 remainder 1
Example: 17 ÷ 5
Think: How many groups of 5 in 17?
- 5 × 3 = 15 (3 groups of 5 = 15)
- 17 - 15 = 2 (2 left over)
17 ÷ 5 = 3 remainder 2
Common Mistakes
-
'12 ÷ 3 = 36.' — No! 12 ÷ 3 = 4. You are thinking of 12 × 3 = 36. Division is OPPOSITE of multiplication.
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'Division is always exact.' — Not always! Sometimes there is a REMAINDER. 13 ÷ 4 = 3 remainder 1.
-
'12 ÷ 4 means 12 groups of 4.' — No! It means 12 SHARED among 4 groups. Each group gets 3.
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'You can divide any number by 0.' — No! You can NEVER divide by 0. It is not defined in mathematics.
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'Division and subtraction are not related.' — Division IS repeated subtraction! 12 ÷ 4 means 'how many times can I subtract 4 from 12?'
Quick Self-Test
Q1: What is 20 ÷ 4? A1: 5.
Q2: Share 15 sweets equally among 5 children. How many each? A2: 15 ÷ 5 = 3 sweets each.
Q3: If 6 × 3 = 18, what is 18 ÷ 6? A3: 3.
Q4: There are 24 students. They sit in rows of 4. How many rows? A4: 24 ÷ 4 = 6 rows.
Q5: What is 14 ÷ 3? (Write with remainder if needed) A5: 14 ÷ 3 = 4 remainder 2.
Q6: 30 marbles shared among 5 friends. Each gets how many? A6: 30 ÷ 5 = 6 marbles each.
Q7: What is the DIVIDEND in 20 ÷ 4 = 5? A7: 20 (the number being divided).
Q8: A baker has 28 buns. He puts 7 buns on each tray. How many trays? A8: 28 ÷ 7 = 4 trays.
