Tally Marks
Data Handling: Tally Marks
Tally Marks
Tally Marks
NCERT anchor
Joyful Mathematics 2 — Birds Come, Birds Go. Counting things in groups connects directly to the tally and counting activities in this chapter.
What you'll learn
- That tally marks count in groups of 5: four straight lines, and the 5th crosses them.
- To read a tally count as (number of full groups × 5) + extra marks.
- To use tally marks to compare or combine two counts.
Key concepts
Verbal: Every group of 5 tally marks is counted together, making counting large numbers faster.
Symbolic: 3 full groups of 5 + 2 extra = (3 × 5) + 2 = 17.
Level 1 — Reading a tally count
4 groups of 5 and 1 extra = 20 + 1 = 21.
Level 2 — Grouping a number into 5s
23 = 4 groups of 5 (20) + 3 extra.
Level 3 — Combining two tally counts
12 cows (tally) + 15 goats (tally) = 27 animals in all.
Worked example
There are 3 full groups of 5 tally marks and 4 extra marks. How many in all?
Step 1 — Groups: 3 × 5 = 15
Step 2 — Add extra: 15 + 4 = 19
Answer: 19
Common mistakes
| Mistake | Why | Fix |
|---|---|---|
| Counting each group as 4, not 5 | Miscounting the crossing line | A full group always has 5 lines |
| Forgetting the extra marks | Only counting full groups | Always add the leftover marks |
| Adding groups instead of multiplying | Skipping the ×5 step | Multiply groups by 5 first, then add extra |
Quick check
- 2 groups of 5 and 3 extra — how many?
- Group 17 into 5s. How many full groups and extra?
- 14 hens + 21 ducks (tally counts) — total?
Stretch: A farmer tallies 24 goats and 16 cows. How many animals in all?
Revision tip: Draw tally marks for your family members' ages in groups of 5 to practise fast counting.
Open the Practice tab for graded questions on Tally Marks.
Key Takeaways (TL;DR)
- NCERT anchor
- What you'll learn
- Key concepts
- Worked example
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