# ML Aggarwal Whole Number Exe-2.3 Class 6 ICSE Maths Solutions

ML Aggarwal Whole Number Exe-2.3 Class 6 ICSE Maths Solutions. We Provide Step by Step Answer of Exe-2.3 Questions for Whole Number as council prescribe guideline for upcoming board exam. Visit official Website CISCE for detail information about ICSE Board Class-6.

## ML Aggarwal Whole Number Exe-2.3 Class 6 ICSE Maths Solutions

Board | ICSE |

Publications | Avichal Publishig Company (APC) |

Subject | Maths |

Class | 6th |

Chapter-2 | Whole Number |

Writer | ML Aggarwal |

Book Name | Understanding |

Topics | Solution of Exe-2.3 Questions |

Edition | 2023-2024 |

**Whole Number Exe-2.3**

ML Aggarwal Class 6 ICSE Maths Solutions

Page-39

**Question 1. Using shorter method, find**

(i) 3246 + 9999

(ii) 7501 + 99999

(iii) 5377 – 999

(iv) 25718 – 9999

(v) 123 × 999

(vi) 203 × 9999

**Answer :**

**(i) 3246 + 9999**

= ( 3246 – 1 ) + ( 9999 + 1 ) (Adding and subtracting 1)

= 3245 + 10000 = 13245

**(ii) 7501 + 99999**

= ( 7501 – 1 ) + ( 99999 + 1) (Adding and subtracting 1)

= 7500 + 100000 = 107500

**(iii) 5377 – 999**

= 5377 – ( 1000 – 1 )

= 5377 – 1000 + 1

= 4377 + 1 = 4378

**(iv) 25718 – 9999**

= 25718 – ( 10,000 – 1)

= 15718 + 1 = 15719

**(v) 123 × 999**

= 123 × ( 1000 – 1 ) ( By subtracting 1)

= 123 × 1000 – 1 × 123

= 123000 – 123 = 122877

**(vi) 203 × 9999**

= 203 × (10,000 – 1) ( By subtracting 1)

= 203 × 10,000 – 203 × 1 = 2030000 – 203 = 2029797

**Question 2. Without using a diagram, find**

(i) 9th square number

(ii) 7th triangular number

**Answer :**

**(i) 9th square number = ?**

The first square number is 1 × 1 = 1

The second square number is 2 × 2 = 4

The Third square number is 3 × 3 = 9

Similarly 9th square number is 9 × 9 = 81

**(ii) 7th triangular number = ?**

first triangular number = 1

second triangular number is = 1 + 2 = 3

Third triangular number = 1 + 2 + 3 + 4 = 10

Similarly 7th triangular number = 1 + 2 + 3

Fourth triangular number = 1 + 2 + 3 + 4 = 10

Similarly, 7th triangular number = 1 + 2 +3 +4 + 5 +6 + 7 = 28

**Question 3.**

(i) Can a rectangular number be a square number?

(ii) Can a triangular number be a square number?

**Answer :**

(i) Yes, 9 is a square as well as rectangular number.

(ii) Yes, 8 is a triangular number = 36, which is a square number.

**Question 4. Observe the following pattern and fill in the blanks:**

1 × 9 + 1 = 10

12 × 9 + 2= 110

123 × 9 + 3 = 1110

1234 × 9 + 4 = ……….

12345 × 9 + 5 = …………..

**Answer :**

1 x 9 + 1 = 10

12 x 9 + 2 = 110

123 x 9 + 3 = 1110

1234 x 9 + 4 = 11110

12345 x 9 + 5 = 111110

**Question 5. Observe the following pattern and fill in the blanks:**

9 × 9 + 7 = 88

98 × 9 + 6 = 888

987 × 9 + 5 = 8888

9876 x 9 + 4 = …………

98765 × 9 + 3 = ……….

**Answer :**

9 x 9 + 7 = 88

98 x 9 + 6 = 888

987 x 9 + 5= 88888

9876 x 9 +4 = 88888

98765 x 9 + 3 = 888888

— : End of ML Aggarwal Whole Number Exe-2.3 Class 6 ICSE Maths Solutions :–

Return to **–** ML Aggarwal Maths Solutions for ICSE Class -6

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