Embibe Big Book for Mathematics for ICSE Class 1

Mathematics

Numbers 11-20

The chapter deals with the ones and tens place of the numbers. Here, we will learn the numbers from eleven to twenty. The representation of numbers on the number line along with the greatest and smallest number in a series is also mentioned.

In this topic, we will learn how to read the numbers from 11 to 20. We will also discuss the ways of writing them in a sequence. Furthermore, we will go through some exercises related to this concept.

Read and Write 11-20

This topic sheds light on the concept of smallest and greatest numbers. It also teaches us how to find these numbers from the set of given numbers. Moreover, it includes exercises related to this concept.

Greatest and Smallest Number

This topic helps us to learn ascending and descending order. It discusses how to arrange the numbers from 11 to 20 from smallest number to largest number and from largest number to smallest number. It also discusses activities.

Ascending and Descending Order

NumbersWiz

Inspired Maths

How to Identify Larger Numbers

This chapter explains different kinds of patterns that are present in nature and includes exercises to teach us about number patterns. It also includes pictures of different shapes and patterns.

Patterns

This chapter describes the two forms of money, rupees and paise. It includes pictures that help us identify the different types and understand the value of money. It also includes some exercises associated with cost and payment of items.

Money

This chapter explains the importance of time with some examples. It defines the terms, earlier and later, along with the duration of time. It also teaches us how to read time in the clock and includes some pictures and exercises.

Time

This chapter explores the concept of measurement of objects. It includes the methods of measuring length, weight and capacity. It also defines the units in which length can be measured and includes some examples and exercises for better learning.

Measurement

This chapter teaches us the steps to add and subtract two digit numbers. It also includes some pictures and word problems on addition and subtraction, along with a few activities for a better understanding of the concept.

Addition and Subtraction Upto 100

In this chapter, we will learn to add numbers using the number strip. It discusses the addition of three numbers. It describes subtraction using the number strip and by drawing lines and crossing them. Word problems are also included in this chapter.

Addition and Subtraction Upto 20

The chapter deals with the meaning of subtraction. It discusses the various methods of subtraction that include vertical subtraction and subtraction on the number line. We will also study number stories in subtraction.

Subtraction within 10

In this chapter, we will understand the meaning of addition through an activity. It discusses the methods of vertical addition, adding numbers with 0 and addition on the number line. We will also learn some number stories in addition.

Addition within 10

This chapter explores how to compare numbers. We will learn the number names of numbers 21-100. It explains ordinal and formal numbers and how to write numbers in expanded form. We will also learn to arrange numbers in ascending and descending order.

Numbers 21-100

In this chapter, we will learn to count the numbers by matching the number of objects with their number. It discusses the concept of backward counting and explains how to compare the numbers. It also describes the increasing and decreasing order of numbers.

Number Upto 10

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Get simple step-by-step  solutions to Chapter Numbers 11-20 for Embibe Big Book for Mathematics for ICSE Class 1 with 3D learning videos & cheat sheets.

Numbers 11-20

Mathematics Solutions from Chapter -1 - Numbers 11-20

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