Raksha Bandhan
Multiplication as repeated addition, equal sharing (division), skip counting, times tables, and fun word problems.
- Multiplication = adding the same number again and again
- Division = sharing equally
- Skip jumping to build times tables
- Patterns in tables (like the 5 table ending in 0 or 5)
- Solving problems with multiplication and division
🎀 Let’s Begin: Making Rakhis
Priya wants to make 4 rakhis. Each rakhi needs 3 beads. How many beads does she need?
3 + 3 + 3 + 3 = 12. We can also say 4 times 3 = 12, and write it as 4 × 3 = 12.
✖️ Part 1: Multiplication
Multiplication is a quick way to add equal groups.
| Equal groups | Repeated addition | Multiplication |
|---|---|---|
| 5 plates, 2 idlis each | 2 + 2 + 2 + 2 + 2 | 5 × 2 = 10 |
| 3 boxes, 6 pens each | 6 + 6 + 6 | 3 × 6 = 18 |
➗ Part 2: Sharing Equally (Division)
Mummy has 12 laddoos to share among 3 children. She gives one to each child, again and again, until none are left. Each child gets 4.
12 ÷ 3 = 4
Division is the opposite of multiplication: 3 × 4 = 12, so 12 ÷ 3 = 4.
🐸 Part 3: Skip Jumping and Tables
Jump by 4 from 0: 4, 8, 12, 16, 20, 24… This is the table of 4!
- Table of 5 always ends in 0 or 5.
- Table of 10 always ends in 0.
- Table of 2 + table of 3 = table of 5 (2 + 3 = 5, 4 + 6 = 10…)
✏️ Practice Time
Try these on your own first, then check your answer below each question.
📘 NCERT Textbook Activity Help
Hints and answers for the activities in the textbook, page by page. Try each one yourself before looking at the answer!
Pages 82–85 · Making rakhisFlowers, threads, and beads
5 rakhis: 5 × 1 = 5 flowers · 5 × 2 = 10 threads · 5 × 4 = 20 beads
10 rakhis: 10 flowers, 20 threads, 40 beads
With 30 of each: the beads run out first. 7 rakhis use 28 beads, so you can make 7 rakhis.
Boxes and sharing
Equal sharing
Groups
Plants: both are correct! 8 × 6 = 6 × 8 = 48.
Tables
Jumps of 3: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30. The next jump after 24 lands on 27. Dhara jumps 3 steps each time.
Jumps of 6: 6, 12, 18, 24, 30… (the table of 6). Table of 4: 4, 8, 12 … 40.
Gopal: count the size of his jumps on the number line, then continue from 27 by that same size.
Dhara’s numbers 32, 40, 48, 56 are jumps of 8, so the first numbers were 8, 16, 24.
Flower on 12: jumps of 6 (only 2 jumps). Numbers reachable only by jumps of 1 (no other equal jumps): 7, 11, 13 (and other such numbers).
Times-5 table
The 5 table ends in 5, 0, 5, 0… · 11 × 5 ends in 5 (55), and 12 × 5 ends in 0 (60).
Ending in 0: 2, 4, 6 (any even number) · Ending in 5: 1, 3, 7 (any odd number)
18 × 5 → 0 · 23 × 5 → 5 · 32 × 5 → 0 · 50 × 5 → 0
Table of 2 + table of 3 = table of 5, in every row. Similarly, table of 2 + table of 4 = table of 6.
Word problems
2. (a) 36 (b) 4 (c) 42 (d) 9
Bigger problems
40 × 5 = 200 · 50 × 5 = 250 · 60 × 5 = 300 · 70 × 5 = 350 · 80 × 5 = 400 · 90 × 5 = 450 · 100 × 5 = 500
45 spokes → 9 wheels. That’s not enough for 10 wheels (which need 50). 60 spokes → 12 wheels.
Spiders: 5 → 40 legs · 10 → 80 · 15 → 120 · 23 → 184 · 32 legs → 4 spiders
Autos: 18 → 54 wheels · 34 → 102 · 36 wheels → 12 autos
Ants: 55 × 6 = 330 legs · 48 legs → 12 cows · 24 horns → 12 cows → 48 legs
Frog: jumps of 7 → the largest number before 50 is 49. Backwards from 50: 43, 36, 29, 22, 15, 8, 1, and then no more jumps are possible. To reach exactly 0, start from a multiple of 7 (7, 14, 21, 28, 35, 42, 49).
Money and sharing
Shells: 84 − 28 = 56 left, then 56 − 28 = 28 left. Yes, there are enough. 112 shells make 4 necklaces.
Try these: 1. 5 necklaces (85 shells used, 15 left) 2. 42 each (1 left over) 3. (a) 10 (b) 25 (c) 50 notes
Envelopes: 7 = 1 and 7 · 18 = 3 and 6 · 32 = 4 and 8 · 20 = 2 and 10 · 45 = 5 and 9
👨👩👧 Tips for Parents
- Share fruits or biscuits equally and say the division sentence aloud.
- Count wheels on vehicles, legs on animals, and fingers on hands in groups.
- Sing or chant tables while skipping or clapping.
