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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

MistakeWhyFix
Remainder 5 when dividing by 5Forgot remainder < divisorMake one more group; remainder 0
Writing 17 ÷ 5 = 3.4Using decimals too earlyUse 3 r 2 at Class 3
Adding remainder to quotient17 ÷ 5 = 5Quotient is 3, not 3+2
Ignoring remainder in word answerOnly stating teamsSay 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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