Chapter 12 — Revision and Practice
Revision helps us remember the important ideas we have learned. In Class 1 Mathematics, we have learned about numbers, addition, subtraction, patterns, shapes, measurement, time and money.
In this chapter, you will revise these important ideas and practise using them in different types of questions. The lessons will help you remember what you have learned and become more confident when solving simple mathematics problems.
Why This Chapter Matters
Revision helps us connect different mathematical ideas. When we practise what we already know, we can remember important concepts and use them more easily when solving new problems.
Regular practice helps us understand mathematics more clearly and use our skills with confidence.
This chapter brings together the main ideas from Class 1 Mathematics so that you can revise them before moving to the next level of learning.
What You Will Learn
- How to revise and compare numbers.
- How to revise addition.
- How to revise subtraction.
- How to revise common shapes.
- How to revise simple measurement ideas.
- How to revise time.
- How to revise money.
- How to use different mathematics skills together.
Before You Begin
Before starting this chapter, you should have completed the earlier chapters of Class 1 Mathematics and tried the practice questions in each chapter.
Do not worry if you cannot remember everything immediately. Use the earlier lessons whenever you need to review a concept before attempting a question.
Understanding the Learning Sequence
The lessons begin with number revision and then review addition and subtraction. After that, you will revise shapes and measurement, followed by time and money. The final lesson combines different mathematical skills for mixed practice.
This sequence revises the main mathematical skills in a clear order before bringing them together in the final practice lesson.
Lessons in This Chapter
Complete the lessons in the order shown below.
Important Ideas
- Numbers can be counted, compared and arranged in order.
- Addition means putting quantities together.
- Subtraction means taking away or finding how many remain.
- Different shapes have different sides, corners and appearances.
- Measurement helps us compare length, height, weight and capacity.
- Time helps us understand when activities happen.
- Money is used when we buy and sell things.
- Different mathematical skills can be used together to solve problems.
Chapter Practice
- What number comes after 19?
- Which number is greater: 8 or 5?
- What is 4 + 3?
- What is 9 − 4?
- How many sides does a triangle have?
- Which is longer: a pencil or a ruler?
- How many days are there in a week?
- Which is more: ₹10 or ₹5?
- If you have 5 apples and get 2 more, how many apples do you have?
- If you have 8 pencils and give away 3, how many pencils remain?
Quick Revision
Numbers help us count and compare quantities. Addition helps us put quantities together, while subtraction helps us take away quantities or find what remains.
We can identify common shapes, compare measurements, understand simple time ideas and use money in everyday situations. These skills can also be combined to solve simple mathematics problems.
Continue Learning
Start with Lesson 1 — Number Revision and complete the lessons in sequence.