Multiplication = repeated addition (same number added many times).
Notation: ×
(times).
Numbers multiplied = factors.
Result = product.
Example: 2 × 4 = 8
→ factors = 2, 4
→ product = 8.
Daily Life Uses: Counting baskets of apples, chairs in rows, or boxes in stacks.
Division = sharing equally OR grouping equally.
Notation: ÷
or /
.
Parts of division:
Dividend = number being divided.
Divisor = number of groups / how many in each group.
Quotient = result of division.
Remainder = what is left.
Formula: Dividend = (Divisor × Quotient) + Remainder
Example: 122 ÷ 5 = 24 remainder 2.
Daily Life Uses: Sharing chocolates, splitting money, forming equal teams.
Arrays = arrangement of objects in rows × columns.
From one multiplication fact, we can write two division facts.
Example: 5 × 7 = 35 →
35 ÷ 7 = 5
35 ÷ 5 = 7
Multiplication: factors → product.
Division: product ÷ one factor → gives the other factor.
Dividing by 10, 100, 1000 → number becomes smaller by 10, 100, 1000.
Place value rule:
÷10 → digits move 1 place right.
÷100 → digits move 2 places right.
÷1000 → digits move 3 places right.
Example:
1000 ÷ 10 = 100
3300 ÷ 300 = 11
Break into parts (64 ÷ 4 → 60 ÷ 4 + 4 ÷ 4 = 15 + 1 = 16).
Halving: ÷4 → halve twice; ÷8 → halve thrice.
Use multiplication tables to check.
Estimate first, then calculate.
Subtract big groups of divisor repeatedly.
Faster if large multiples are used.
Example: 582 ÷ 6 → quotient = 97.
Always smaller than divisor.
If remainder = 0 → exact division.
If remainder ≠ 0 → leftover exists.
Formula check: N = (D × Q) + R.
Example: 902 ÷ 16 → Q = 56, R = 6 → 902 = (16 × 56) + 6.
Write the problem:
Dividend = 100, Divisor = 7 → 100 ÷ 7
Distance & time: Find per day/hour values.
Capacity & packing: Bags, boxes, bottles.
Sharing equally: Money, food, resources.
Data handling: Complete tables by dividing totals by units.
Multiplication & division are inverse operations.
Patterns with 10, 100, 1000 → digit shifts.
Large number division = easier with estimation + partial quotients.
Remainder concept important in practical life (e.g., leftover items).
35 videos|318 docs|7 tests
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1. What are the basic principles of multiplication and division? | ![]() |
2. How are arrays used to connect multiplication and division? | ![]() |
3. What is the relationship between multiplication and division? | ![]() |
4. What are some effective strategies for division? | ![]() |
5. How do remainders work in division, and what is the Remainders Rule? | ![]() |