**Pre-Requisites**

- Class 4

## Learning Objective

On successful completion of this lesson, students will be able to:

- demonstrate basic knowledge of numbers, largest number , smallest number.
- analyze how to write numbers.
- develop problem-solving skills.
- apply in real life.

**Dictionary**

- Number: 1, 2, 3 etc.
**>**: Greater than**<**: Lesser than**=**: Equal to**Ascending**: Increasing**Descending**: Decreasing**Order**: Sequence- Smallest number: Start with 1
- Largest nnumber: Start with 9
- Digit: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9

**2.1 **Introduction

=> Digit: 0, 1, 2, 3, 4, 5, 6, 7, 8 & 9 are called digits.

=> Number: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 , 10, 11 etc. are called Numbers.

**2.2** Indian Place Value Chart

#### 2.2.1 Periods in a place value chart

=> In Indian Place Value Chart , the nine places are grouped into four periods namely Ones, Thousands , Lakhs, Crores.

=> These periods are arranged from Ones to Crores towards left to right as shown below:

Periods: | Crores | Lakhs | Thousands | Ones |

#### 2.2.2 Places in a place value chart

=> Ones Period has three places: Ones (O), Tens (T) & Hundreds (H).

=> Thousands Period has two places: Thousands (TH) & Ten Thousands (TTH).

=> Lakhs Period has two places: Lakhs (L) & Ten Lakhs (TL)

=> Crores Period has two places: Crores (C) & Ten Crores (TC).

=> Places are shown below:

Places: | TC | C | TL | L | TTH | TH | H | T | O |

#### 2.2.3 Indian Place Value Chart

#### 2.2.4 How to Write Number

=> We use commas (,) to separate the periods. Let’s see by an example

e.g 2.1 Write the number 345689346 by separating the periods.

Sol.

Step 1: Draw the indian place value chart & put the number.

TC | C | TL | L | TTH | TH | T | H | O |

3 | 4 | 5 | 6 | 8 | 9 | 3 | 4 | 6 |

Step 2: Rewrite these numbers here by separating commas at its period i.e 34,56,89,346 Ans.

**Quick It:** Put commas after three digits and then put after every two digits i.e 34**,**56**,**89**,**345

**1.4 Practice Sets **

- Fill Type
- Match Type
- Order Type
- Conversion Type
- Compare Type
- Error Type
- Statement Type
- True/False Type
- Related Type
- Day-to-Day Type
- Miscellaneous Type

#### Set-1

**1.Write the Roman numeral for each of the following Hindu-Arabic numerals.**

**2. Write the Hindu-Arabic numerals corresponding to each of the following.**

**3. Which of the following are meaningless?**

**4. Compare and put symbol >, < or =in the placeholder.**

**5. Fill in the blanks.**

**6. Cross (x) the Roman numerals which are not written correctly.**

**7. Write the following Roman numerals in ascending order.**

**8. Write the following Roman numerals in descending order.**

**9. Solve & write the answer in Roman numerals.**

**10. Complete the following table.**

#### Set-2

#### Set-3

#### Set-4

#### Set-5

**1.5 Quiz**

1.In Roman numerals, there are only……… basic symbols.

(a). 7 (b). 9 (c). 10 (d). 8

2. Roman numeral for the smallest 4-digit number is

(a). X (b). C (c). M (d). D

3. Which of the following numerals cannot be repeated?

(a). I (b). V (c). X (d). C

4. IX+XV+XX=

(a). 35 (b). 40 (c). 44 (d). 45

5. I can be subtracted from

(a). V (b). V&X (c). X&C (d). V,X&C

6. Compare: CDXLIX ( ) CDLX

(a). > (b). < (c). = (d). None

7. XIX + XXIX=

(a). XXXVIII (b). XLVII (c). XXXIX (d). XLVIII

8. CC – CXXV=

(a). LXV (b). LXXV (c). LXXXV (d). XCV

9. XII /II=

(a). V (b). VI (c). VII (d). VIII

10. XII x X=

(a). CXX (b). CX (c). CXXX (d). None

**1.6 Test**

**1.7 Exam**

The exam will be conducted after the completion of the course.

**1.8 Ask Question**

Ask your doubts **here**

#### …..The End…..

**Other Notes**

- Counting from one to hundred: एक से लेकर सौ तक गिनती
- Punctuation Mark: विराम चिन्ह
- Roman Numerals : 1 to 3000
- Testing
- Words Start with letter G
- Words Start with letter F
- Words Start with letter E
- Words Start with letter D
- Words Start with letter C
- Words Start with letter B