Remainders
Quotient and remainder when division is not exact.
Remainders
Remainders
What you'll learn
- When division is not exact, we get a quotient and remainder.
- Remainder must be less than the divisor.
- Real stories: leftover sweets, extra seats.
- Check: (quotient × divisor) + remainder = dividend.
Key concepts
Level 1 — Core idea
Verbal: 17 ÷ 5: make groups of 5 from 17 — three groups of 5, 2 left over.
Symbolic: 17 ÷ 5 = 3 remainder 2; write 17 = 5 × 3 + 2.
Visual: 17 dots → circle three 5s; 2 dots outside → remainder 2.
Level 2 — Going deeper
Rule: remainder < divisor. If remainder equals divisor, you can make one more group.
NCERT anchor
NCERT Math Mela, Class 3 — Chapter 7 shares objects that do not split evenly. Always say "3 remainder 2," not "3 point something" at this level.
Worked example
17 ÷ 5 = ?
Step 1 — 5 × 3 = 15 (largest multiple of 5 below 17)
Step 2 — 17 − 15 = 2 left
Step 3 — 17 ÷ 5 = **3 remainder 2**
Check: 5×3 + 2 = 17 ✓
22 children, 5 per team. How many full teams? Any left?
Step 1 — 22 ÷ 5 = 4 × 5 = 20, remainder 2
Step 2 — **4 full teams**, **2 children** without a full team
Answer: 4 teams, 2 remainder
Common mistakes
| Mistake | Why | Fix |
|---|---|---|
| Remainder 5 when dividing by 5 | Forgot remainder < divisor | Make one more group; remainder 0 |
| Writing 17 ÷ 5 = 3.4 | Using decimals too early | Use 3 r 2 at Class 3 |
| Adding remainder to quotient | 17 ÷ 5 = 5 | Quotient is 3, not 3+2 |
| Ignoring remainder in word answer | Only stating teams | Say 2 children left |
Quick check
- 14 ÷ 3 = ? and remainder?
- Check 11 = 3×3 + 2 — true or false?
- Can remainder be 6 when dividing by 5?
- Stretch: 29 ÷ 4 = ? Write the check equation.
Revision tip: Always multiply back and add remainder — if you don't get the start number, recheck.
Open the Practice tab for graded questions on Remainders.
Key Takeaways (TL;DR)
- What you'll learn
- Key concepts
- Worked example
- Common mistakes
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