Chapter 14 of 14

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CBSE Class 4 Mathematics★ 4-5 marks through school tests, activities, notebook work, and competency questions in CBSE Class 4 Mathematics (Maths Mela)

Data Handling

The final CBSE Class 4 Mathematics (Maths Mela) chapter, on data handling. Children collect and organise data into tables, and read and make pictographs and bar graphs to answer questions. These notes give core ideas, worked examples, an activity, common mistakes, a practice set with answers, and quick revision.

⏱ 15 min readEasy difficulty✓ Free · NCERT-aligned

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By the end of this chapter you'll be able to…

1Collect and organise data in a table with tallies
2Read a pictograph using its key
3Read and make a simple bar graph
4Find the most, least, total, and difference from data
5Answer questions from a graph or table

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Why this chapter matters

Data Handling teaches children to collect, organise, and read information using tables, pictographs, and bar graphs. These skills help them compare, interpret, and answer questions from data - useful across school and daily life.

Before you start — revise these

A 5-minute refresher here will save you 30 minutes of confusion below.

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Data start at Class 3 (What's in a Name?)

Knowing simple data collection and comparison from Class 3.

Data Handling — Class 4 Mathematics (CBSE)

From the current NCERT Maths Mela Grade 4 book, Chapter 14. Information is everywhere — let us collect it, organise it, and read it.

1. Why this chapter matters

We are surrounded by data — favourite fruits, marks, rainfall. Learning to collect, organise, and show data in tables, pictographs, and bar graphs helps us compare and answer questions quickly and clearly.

2. Core ideas

Idea 1 — Data is information we collect

We gather information, then organise it in a table using tallies or numbers.

Method 2 — A pictograph uses a symbol and a key

In a pictograph, one symbol stands for a number (the key). If 1 ⬤ = 5, then 4 ⬤ = 20.

Skill 3 — A bar graph uses bars

In a bar graph, the length (or height) of a bar shows the number. Longer bar = more.

3. Worked examples

Example 1: In a fruit table, apples have 8 and bananas 5. Which is more, and by how much?

Apples are more, by 8 − 5 = 3.

Example 2: A pictograph uses 1 ⬤ = 5 books. A shelf shows 4 ⬤. How many books?

4 × 5 = 20 books.

Example 3: In a bar graph, cricket has the tallest bar. What does that mean?

Cricket is the most popular (it has the highest number).

4. Activity corner

Ask 10 friends their favourite colour. Make a tally table, then draw a small bar graph. Write:

Your table with tallies
The most and least favourite colour
The maths idea (organising and reading data)

5. Common mistakes

Mistake: Reading a pictograph without using the key. Fix: Multiply the number of symbols by the key value.
Mistake: Making bars of different widths. Fix: Keep bars the same width; only their length should change.
Mistake: Miscounting tallies. Fix: Group tallies in fives (IIII crossed) to count easily.

6. How to write better answers

Read the table, pictograph key, or bar graph carefully.
For a pictograph, multiply symbols by the key.
To compare, find the most, least, total, or difference.
Write the answer with what it stands for.

7. Practice set

What do we call information that we collect?
In a pictograph, what does the key tell us?
If 1 ⬤ = 10 and a row has 3 ⬤, how many is that?
In a bar graph, what does the tallest bar show?
In a table, football has 12 and hockey 7. How many more like football?
How do we count tallies easily?

8. Answer key

Data.
How many each symbol stands for.
3 × 10 = 30.
The largest number (the most popular item).
12 − 7 = 5 more.
Group them in fives.

9. Quick revision

Data is information we collect and organise.
Use tables with tallies, pictographs, and bar graphs.
A pictograph's key tells how many each symbol stands for.
In a bar graph, a longer bar means a bigger number.
Read graphs to find most, least, total, and difference.

Key formulas & results

Everything you need to memorise, in one card. Screenshot this for revision.

Core idea

Data is information we collect and organise in tables, pictographs, and bar graphs.

Use tallies to record data.

Math move

A pictograph uses a key: if 1 symbol = 5, then 4 symbols = 20.

Multiply symbols by the key value.

Exam habit

In a bar graph, a longer bar means a bigger number; read most, least, total, and difference.

Keep bars the same width.

⚠️

Common mistakes & fixes

These are the exact errors that cost students marks in board exams. Read them once, save yourself the trouble.

WATCH OUT

✗ Reading a pictograph without using the key

✓ Multiply the number of symbols by the key value.

WATCH OUT

✗ Making bars of different widths

✓ Keep bars the same width; only their length should change.

WATCH OUT

✗ Miscounting tallies

✓ Group tallies in fives to count them easily.

NCERT exercises (with solutions)

Every NCERT exercise from this chapter — what it covers and how many questions to expect.

Read, observe, and discuss

Read the tables, pictographs, and bar graphs in the textbook before writing answers.

Questions

Notebook practice

Making tally tables, reading pictographs with keys, and reading bar graphs.

Questions

Project or activity

Survey ten friends, make a tally table, and draw a bar graph.

Questions

Practice problems

Try each one yourself before tapping "Show solution". Active recall > rereading.

Q1EASY· Concept

What do we call information that we collect?

▶ Show solution

Data.

Q2EASY· Pictograph

In a pictograph, what does the key tell us?

▶ Show solution

How many each symbol stands for.

Q3MEDIUM· Pictograph

If 1 symbol = 10 and a row has 3 symbols, how many is that?

▶ Show solution

3 x 10 = 30.

Q4EASY· Bar graph

In a bar graph, what does the tallest bar show?

▶ Show solution

The largest number, that is, the most popular item.

Q5MEDIUM· Compare

In a table, football has 12 and hockey 7. How many more like football?

▶ Show solution

12 - 7 = 5 more.

Q6HARD· Apply

A pictograph uses 1 symbol = 4 mangoes. Three baskets show 5, 3, and 2 symbols. How many mangoes in all?

▶ Show solution

(5 + 3 + 2) x 4 = 10 x 4 = 40 mangoes.

5-minute revision

The whole chapter, distilled. Read this the night before the exam.

•Data Handling is Chapter 14 of the Class 4 Maths Mela textbook.
•Data is information we collect and organise.
•Use tables with tallies, pictographs, and bar graphs.
•A pictograph's key tells how many each symbol stands for.
•In a bar graph, a longer bar means a bigger number.
•Read graphs to find most, least, total, and difference.

CBSE marks blueprint

Where the marks come from in this chapter — so you can plan your prep.

Typical chapter weightage: 4-5 marks in school tests, oral checks, notebooks, and activities

Question type	Marks each	Typical count	What it tests
Very Short	1	2-3	Meaning of data, keys, or reading a bar
Short Answer	2	1-2	Reading pictographs or comparing data
Activity / Project	3	0-1	Surveys, tally tables, and bar graphs

Prep strategy

Make tally tables from simple surveys
Always use the key to read a pictograph
Draw bars of equal width
Read most, least, total, and difference

Where this shows up in the real world

This chapter isn't just an exam topic — it lives in the world around you.

Comparing information

Graphs help compare favourites, scores, and amounts quickly.

Surveys and reports

Tables and graphs present survey results clearly.

Everyday decisions

Reading data helps make sense of prices, weather, and counts.

Exam strategy

Battle-tested tips from teachers and toppers for this chapter.

Underline the command word: read, how many, most, or difference
Use the key for every pictograph
Keep bars the same width when drawing
State what the number stands for

Going beyond the textbook

For olympiad aspirants and curious learners — topics that build on this chapter.

Make a bar graph of the rainfall in five months and find the wettest.
Design a pictograph where one symbol stands for 100 and show three values.

Where else this chapter is tested

CBSE board isn't the only one — other exams test this chapter too.

CBSE Class 4 School AssessmentHigh

Class 4 Foundation / Olympiad PracticeMedium

Notebook and Activity EvaluationHigh

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Questions students ask

The real ones — pulled from the Q&A community and tutor sessions.

A key tells how many each symbol stands for. If one symbol equals 5, then four symbols mean 20.

Look at the length or height of each bar; a longer bar means a bigger number. Compare bars to find the most, least, or difference.

Practice more, ask doubts, find a tutor

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