Textbook | Kips IT Beans |

Class | 7 |

Subject | Computer |

Chapter | 1 NUMBER SYSTEM |

Other Chapters | Chapter 2 Chapter 3 Chapter 4 Chapter 5 Chapter 6 Chapter 7 Chapter 8 Chapter 9 Chapter 10 Chapter 11 Chapter 12 |

Contents

- Kips IT Beans Class 7 Chapter 1 Solutions NUMBER SYSTEM
- A. Fill in the blanks:
- B. State True or False:
- C. Application Based Questions:
- Ratika’s computer teacher asked her to convert the Octal number to Decimal number. Suggest her the method which she should apply in converting the Octal number.
- The teacher has given an assignment to Saurabh on Binary subtraction. Saurabh is confused how to subtract 1 from 0. Help him in solving the problem.
- D. Multiple Choice Questions:
- E. Answer the following:
- Explain Number system and its commonly used types.
- What are the rules to convert a Decimal number into Binary number?
- Write the rules to multiply two Binary numbers.
- Briefly explain the Octal number system.
- ACTIVITY SECTION
- A. Convert the following Decimal numbers into Binary numbers:
- B. Convert the following Binary numbers into Decimal numbers:
- C. Perform Binary addition on the following:
- D. Find the difference between the following Binary numbers:
- E. Multiply the following Binary numbers:
- F. Divide these Binary numbers:
- Other Chapter Solutions

## Kips IT Beans Class 7 Chapter 1 Solutions NUMBER SYSTEM

**Brain Developer**

### A. Fill in the blanks:

1. The base of Binary number system is **2**.

2. The base of **Decimal number** system is 10.

3. Octal Number system consists of **8** digits.

4. In Binary addition, 1+1 equals to **10**.

5. **Binary number** system is understood by the computer system.

6. **Hexadecimal** uses 16 symbols to represent numbers.

7. In Binary subtraction, 1-1 equals **0**.

### B. State True or False:

1. The decimal number system consists of 10 digits i.e., 0 to 9. – **TRUE**

2. The method to perform division of two binary numbers is not same as that of decimal numbers. – **FALSE**

3. 1 multiplied by 0 equals to 0. – **TRUE**

4. Charles Babbage introduced the concept of 0 (Zero). – **FALSE**

5. The numbers used in Octal number system are 1 to 7. – **FALSE**

### C. Application Based Questions:

**Ratika’s computer teacher asked her to convert the Octal number to Decimal number. Suggest her the method which she should apply in converting the Octal number.**

Divided by 10

**The teacher has given an assignment to Saurabh on Binary subtraction. Saurabh is confused how to subtract 1 from 0. Help him in solving the problem.**

With Borrow

### D. Multiple Choice Questions:

1. **Aryabhat** introduced the concept of 0 (Zero).

- Ada Lovelace
**Aryabhat**- Bill Gates

2. A **Digital Computer** coverts the decimal format into its binary equivalent.

**Digital Computer**- Cell phone
- Abacus

3. A computer understands only **Binary** code.

- English
- French
**Binary**

4. In Binary multiplication, 1×1 equals to **1**.

- 0
**1**- 2

5. To convert Decimal number into Binary number, divide the number by **2**.

**2**- 8
- 10

### E. Answer the following:

**Explain Number system and its commonly used types.**

A set of values used to represent different quantity is known as number system. The digital computer represents all kind of data and information in Binary number. The commonly used number system is Decimal number system.

**What are the rules to convert a Decimal number into Binary number?**

1. Divide the given decimal number with the base 2.

2. Write down the remainder and divide the quotient Again by 2.

3. Repeat the step 2 till the quotient in zero.

**Write the rules to multiply two Binary numbers.**

The rules for multiplication of two numbers a and b is:

A B A*B=C, 0 0 0*0=0, 0 1 0*1=0, 1 0 1*0=0, 1 1 1*1=1

**Briefly explain the Octal number system.**

The octal number system consists of 8 digit i.e., 0 to 7 will the base 8. The procedure of octal to decimal conservation is similar to binary to decimal conservation. The only difference is the change of base.

**ACTIVITY SECTION**

### A. Convert the following Decimal numbers into Binary numbers:

a. (**68**)₁₀ = (1000100)₂

b. (** 987**)₁₀ = (1111011011)₂

c. (**657**)₁₀ = (1010010001)₂

### B. Convert the following Binary numbers into Decimal numbers:

a. (**1011**)₂ = (11)₁₀

b. (**100110**)₂ = (38)₁₀

c. (**10101**)₂ = (21)₁₀

### C. Perform Binary addition on the following:

a. 10101 + 00111 = **11100**

b. 1001101 + 1000101101 = **1001111010**

c. 1101 + 1001 = **10110**

### D. Find the difference between the following Binary numbers:

a. 10011 – 01010 = **01001**

b. 11001001 – 01100110 = **1100011**

c. 111 – 001 = **110**

### E. Multiply the following Binary numbers:

a. 101 × 011 = **1111**

b. 1011 × 101 = **110111**

c. 101010 × 1011 = **0111001110**

### F. Divide these Binary numbers:

a. 1111/11 = **101**

b. 111001/101 = **1011**

c. 111111111/1011 = **101110**

## Other Chapter Solutions

- Kips IT Beans Class 7 Chapter 2 Solutions
- Kips IT Beans Class 7 Chapter 3 Solutions
- Kips IT Beans Class 7 Chapter 4 Solutions
- Kips IT Beans Class 7 Chapter 5 Solutions
- Kips IT Beans Class 7 Chapter 6 Solutions
- Kips IT Beans Class 7 Chapter 7 Solutions
- Kips IT Beans Class 7 Chapter 8 Solutions
- Kips IT Beans Class 7 Chapter 9 Solutions
- Kips IT Beans Class 7 Chapter 10 Solutions
- Kips IT Beans Class 7 Chapter 11 Solutions
- Kips IT Beans Class 7 Chapter 12 Solutions