NCERT Revision Notes for Class 3 Maths Chapter 4: Vacation with My Nani Maa – Free PDF Download

Chapter 4 of Class 3 Maths, Vacation with My Nani Maa, uses the story of a family trip to grandmother’s house to introduce measurement of length and distance, along with simple travel-related word problems combining addition, subtraction, and units of measurement.

Last Updated: September 23, 2026

Key Concepts

Units of length: centimetres (cm) and metres (m) are used to measure the length or distance of objects and places, with 100 cm making 1 m.

Measuring with a scale or tape: using a ruler or measuring tape to find the exact length of an object or distance.

Comparing distances: using addition and subtraction to compare how far different places are, such as comparing the distance to two different relatives’ homes.

Estimating length before measuring: making a sensible guess about a length or distance before measuring it exactly, to build measurement sense.

Travel word problems: combining ideas of distance, time, and simple addition or subtraction in the context of a journey, such as travelling to Nani Maa’s house.

Worked Examples

Example 1

Convert 250 cm into metres and centimetres. Since 100 cm = 1 m, 250 cm = 2 m 50 cm.

Example 2

A family travels 45 km to reach the bus stop, then another 15 km to reach Nani Maa’s village. What is the total distance travelled? 45 km + 15 km = 60 km.

Example 3

If the distance to the village is 60 km and the family has already travelled 35 km, how much distance is left? 60 km − 35 km = 25 km.

Quick Recap

• Length and distance are commonly measured in centimetres, metres, and kilometres.
• 100 centimetres make 1 metre.
• Adding and subtracting distances helps solve real travel-based word problems.
• Estimating before measuring builds a stronger sense of length and distance.
• Everyday travel stories, like visiting a grandparent, are a natural context for measurement word problems.

Common Mistakes to Avoid

• Mixing up centimetres and metres while converting between the two units.
• Adding or subtracting distances without keeping the units consistent.
• Using the wrong operation in a travel word problem, such as adding when the question asks for remaining distance.
• Misreading a ruler or measuring tape, especially near the zero mark.
• Forgetting to include all parts of a multi-step journey when finding the total distance.

Home Practice Tips

• Measure the length of household objects, like a table or a door, using a measuring tape.
• Practise converting simple lengths between centimetres and metres.
• Talk about the distance to a relative’s house and try simple addition or subtraction with real or approximate distances.
• Estimate the length of an object before measuring it exactly, then compare the estimate with the actual measurement.
• Create simple travel-themed word problems together involving distances and totals.

Frequently Asked Questions

Q1. Why does this chapter use a family trip to teach measurement?
A relatable travel story, like visiting a grandparent, makes measuring distances and solving related word problems more engaging and easier to understand for children.

Q2. How many centimetres make one metre?
100 centimetres make 1 metre.

Q3. How can I help my child estimate lengths accurately?
Practise estimating the length of familiar objects, like a pencil or a table, and then measure them to check how close the estimate was, repeating this regularly.

Q4. What kind of word problems appear in this chapter?
Word problems about adding distances travelled in parts of a journey, finding remaining distance, and comparing distances to different places are common.

Q5. How does this chapter connect to later measurement topics?
It builds the foundation for more detailed measurement of length, weight, and capacity using standard units in later chapters and classes.

Full walkthrough: Chapter 4 Solutions for step-by-step textbook answers.

Written by Satish

NCERTBooks.org is an independent educational resource run by a small team focused on making official NCERT textbooks easy to find, read, and download for students, parents, and teachers across India. We are not affiliated with NCERT or the Ministry of Education -- we organise publicly available NCERT content by class and subject, verify links against official sources, and build tools (like our in-browser reader) that make studying more convenient. Every guide we publish is written and reviewed by our team based on the actual NCERT curriculum and syllabus.