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# RD Sharma Solutions - Ex-1.3 Integers, Class 7, Math Class 7 Notes | EduRev

## RD Sharma Solutions for Class 7 Mathematics

Created by: Abhishek Kapoor

## Class 7 : RD Sharma Solutions - Ex-1.3 Integers, Class 7, Math Class 7 Notes | EduRev

The document RD Sharma Solutions - Ex-1.3 Integers, Class 7, Math Class 7 Notes | EduRev is a part of the Class 7 Course RD Sharma Solutions for Class 7 Mathematics.
All you need of Class 7 at this link: Class 7

#### Question 1:

Find the value of
36 Ã· 6 + 3

On applying the BODMAS rule, we get:
36  Ã·  6  + 3
= 6 + 3  (On performing division)
= 9

#### Question 2:

Find the value of
24 + 15 Ã· 3

On applying the BODMAS rule, we get:
24 + 15 Ã· 3
= 24 + 5  (On performing division)
= 29

#### Question 3:

Find the value of
120 âˆ’ 20 Ã· 4

On applying the DMAS rule, we get:
120 âˆ’ 20 Ã· 4
= 120 âˆ’ 5 (On performing division)
= 115

#### Question 4:

Find the value of
32 âˆ’ (3 Ã— 5) + 4

On applying the DMAS rule, we get:
32 âˆ’ ( 3 Ã— 5 ) + 4
= 32 âˆ’ 15 + 4    (On performing multiplication)
=  36 âˆ’ 15         (On performing addition)
= 21                  (On performing subtraction)

#### Question 5:

Find the value of
3 âˆ’ (5 âˆ’ 6 Ã· 3)

On applying the DMAS rule, we get:
3 âˆ’- ( 5 âˆ’- 6 Ã· 3)
= 3 âˆ’- ( 5 âˆ’ 2)       (On performing division)
= 3 âˆ’- 3                (On performing subtraction)
= 0

#### Question 6:

Find the value of
21 âˆ’ 12 Ã· 3 Ã— 2

On applying the DMAS rule, we get:
21 âˆ’ 12 Ã· 3 Ã— 2
= 21 âˆ’ 4 Ã— 2         (On performing division)
= 21 âˆ’ 8               (On performing multiplication)
= 13                      (On performing subtraction)

#### Question 7:

Find the value of
16 + 8 Ã· 4 âˆ’ 2 Ã— 3

On applying the DMAS rule, we get:
16 + 8 Ã· 4 âˆ’ 2 Ã— 3
= 16 + 2 âˆ’ 6            (On performing division and multiplication)
= 18 âˆ’ 6
= 12

#### Question 8:

Find the value of
28 âˆ’ 5 Ã— 6 + 2

On applying the DMAS rule, we get:
28 âˆ’- 5 Ã— 6 + 2
= 28 âˆ’- 30 + 2 (On performing multiplication)
= 30 âˆ’- 30       (On performing addition)
= 0                 (On performing subtraction)

#### Question 9:

Find the value of
(âˆ’20) Ã— (âˆ’1) + (âˆ’28) Ã· 7

On applying the DMAS rule, we get:
(âˆ’ 20) Ã— (âˆ’ 1) + (âˆ’28) Ã· 7
=  20 + (âˆ’ 4)   (On performing division and multiplication)
= 20 âˆ’ 4
= 16

#### Question 10:

Find the value of
(âˆ’2) + (âˆ’8) Ã· (âˆ’4)

On applying the DMAS rule, we get:
(âˆ’ 2) + (âˆ’ 8) Ã· (âˆ’ 4)
= (âˆ’ 2) + 2  (On performing division)

#### Question 11:

Find the value of
(âˆ’15) + 4 Ã· (5 âˆ’ 3)

On applying the BODMAS rule, we get:
(âˆ’ 15) + 4 Ã· (5 âˆ’ 3)
= (âˆ’ 15) + 4 Ã· 2  (On simplifying brackets)
= (âˆ’ 15) + 2        (On performing division)
= âˆ’ 13

#### Question 12:

Find the value of
(âˆ’40) Ã— (âˆ’1) + (âˆ’28) Ã· 7

On applying the BODMAS rule, we get:
(âˆ’ 40) Ã— (âˆ’ 1) + (âˆ’ 28) Ã· 7
=  40 + (âˆ’ 4)                           (On performing division and multiplication)
=  36

#### Question 13:

Find the value of
(âˆ’3) + (âˆ’8) Ã· (âˆ’4) âˆ’2 Ã— (âˆ’2)

On applying the BODMAS rule, we get:
(âˆ’ 3) + (âˆ’ 8) Ã· (âˆ’ 4) âˆ’ 2 Ã— (âˆ’ 2)
=  (âˆ’ 3) + 2 + 4                (On performing division and multiplication)
= (âˆ’ 3) + 6                       (On performing addition)
= 3                                  (On performing subtraction)

#### Question 14:

Find the value of
(âˆ’3) Ã— (âˆ’4) Ã· (âˆ’2) + (âˆ’1).

On applying the BODMAS rule, we get:
(âˆ’3) Ã— (âˆ’4) Ã· (âˆ’2) + (âˆ’1)
= (âˆ’3) Ã— 2 + (âˆ’1)                    (On performing division)
=  âˆ’6 âˆ’ 1                                (On performing multiplication)

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