# Selina solutions for Concise Mathematics Class 7 ICSE chapter 1 - Integers [Latest edition]

## Chapter 1: Integers

Exercise 1 (A)Exercise 1 (B)Exercise 1 (C)Exercise 1 (D)
Exercise 1 (A)

### Selina solutions for Concise Mathematics Class 7 ICSE Chapter 1 Integers Exercise 1 (A)

Exercise 1 (A) | Q 1.1

Evaluate:  427 x 8 + 2 x 427

Exercise 1 (A) | Q 1.2

Evaluate: 394 x 12 + 394 x (-2)

Exercise 1 (A) | Q 1.3

Evaluate: 558 x 27 + 3 x 558

Exercise 1 (A) | Q 2.1

Evaluate: 673 x 9 + 673

Exercise 1 (A) | Q 2.2

Evaluate: 1925 x 101 – 1925

Exercise 1 (A) | Q 3.1

Verify:  37 x {8 +(-3)} = 37 x 8 + 37 x – (3)

Exercise 1 (A) | Q 3.2

Verify:  (-82) x {(-4) + 19} = (-82) x (-4) + (-82) x 19

Exercise 1 (A) | Q 3.3

Verify:  {7 – (-7)} x 7 = 7 x 7 – (-7) x 7

Exercise 1 (A) | Q 3.4

Verify:  {(-15) – 8} x -6 = (-15) x (-6) – 8 x (-6)

Exercise 1 (A) | Q 4.1

Evaluate: 15 x 8

Exercise 1 (A) | Q 4.2

Evaluate: 15 x (- 8)

Exercise 1 (A) | Q 4.3

Evaluate: (-15) x  8

Exercise 1 (A) | Q 4.4

Evaluate: (-15) x - 8

Exercise 1 (A) | Q 5.1

Evaluate: 4 x 6 x 8

Exercise 1 (A) | Q 5.2

Evaluate: 4 x 6 x (- 8)

Exercise 1 (A) | Q 5.3

Evaluate: 4 x (- 6) x 8

Exercise 1 (A) | Q 5.4

Evaluate: (- 4) x 6 x 8

Exercise 1 (A) | Q 5.5

Evaluate: 4 x (- 6) x (- 8)

Exercise 1 (A) | Q 5.6

Evaluate:  (- 4) x (- 6) x 8

Exercise 1 (A) | Q 5.7

Evaluate:  (- 4) x  6 x (- 8)

Exercise 1 (A) | Q 5.8

Evaluate:  (- 4) x (- 6) x (- 8)

Exercise 1 (A) | Q 6.1

Evaluate: 2 x 4 x 6 x 8

Exercise 1 (A) | Q 6.2

Evaluate:  2 x (- 4) x 6 x 8

Exercise 1 (A) | Q 6.3

Evaluate: (- 2) x 4 x (- 6) x 8

Exercise 1 (A) | Q 6.4

Evaluate: (- 2) x (- 4) x 6 x (- 8)

Exercise 1 (A) | Q 6.5

Evaluate: (- 2) x (- 4) x (- 6) x (- 8)

Exercise 1 (A) | Q 7.1

Determine the integer whose product with ‘-1’ is: - 47

Exercise 1 (A) | Q 7.2

Determine the integer whose product with ‘-1’ is: 63

Exercise 1 (A) | Q 7.3

Determine the integer whose product with ‘-1’ is: -1.

Exercise 1 (A) | Q 7.4

Determine the integer whose product with ‘-1’ is: 0.

Exercise 1 (A) | Q 8.1

Eighteen integers are multiplied together. What will be the sign of their product, if:

15 of them are negative and 3 are positive?

Exercise 1 (A) | Q 8.2

Eighteen integers are multiplied together. What will be the sign of their product, if:

12 of them are negative and 6 are positive?

Exercise 1 (A) | Q 8.3

Eighteen integers are multiplied together. What will be the sign of their product, if:

9 of them are positive and the remaining are negative?

Exercise 1 (A) | Q 8.4

Eighteen integers are multiplied together. What will be the sign of their product, if:

all are negative?

Exercise 1 (A) | Q 9.1

Find which is greater?

(8 + 10) x 15 or 8 + 10 x 15

Exercise 1 (A) | Q 9.2

Find which is greater?

12 × (6 – 8) or 12 × 6 – 8

Exercise 1 (A) | Q 9.3

Find which is greater?

{(-3) – 4} × (-5) or (-3) – 4 × (-5)

Exercise 1 (A) | Q 10.1

State, true or false of the given statement:

product of two integers can be zero.

• True

• False

Exercise 1 (A) | Q 10.2

State, true or false of the given statement:

product of 120 negative integers and 121 positive integers is negative.

• True

• False

Exercise 1 (A) | Q 10.3

State, true or false of the given statement:

a x (b + c) = a x b + c

• True

• False

Exercise 1 (A) | Q 10.4

State, true or false of the given statement:

(b – c) × a=b – c × a

• True

• False

Exercise 1 (B)

### Selina solutions for Concise Mathematics Class 7 ICSE Chapter 1 Integers Exercise 1 (B)

Exercise 1 (B) | Q 1.1

Divide: 117 by 9

Exercise 1 (B) | Q 1.2

Divide: (- 117) by 9

Exercise 1 (B) | Q 1.3

Divide: 117 by (- 9)

Exercise 1 (B) | Q 1.4

Divide: (- 117) by (- 9)

Exercise 1 (B) | Q 1.5

Divide: 225 by (- 15)

Exercise 1 (B) | Q 1.6

Divide: (- 552) ÷ 24

Exercise 1 (B) | Q 1.7

Divide: (- 798) by (- 21)

Exercise 1 (B) | Q 1.8

Divide: (- 910) ÷ – 26

Exercise 1 (B) | Q 2.1

Evaluate: (- 234) ÷ 13

Exercise 1 (B) | Q 2.2

Evaluate: 234 ÷ (- 13)

Exercise 1 (B) | Q 2.3

Evaluate: (- 234) ÷ (- 13)

Exercise 1 (B) | Q 2.4

Evaluate: 374 ÷ (- 17)

Exercise 1 (B) | Q 2.5

Evaluate: (- 374) ÷ 17

Exercise 1 (B) | Q 2.6

Evaluate: (- 374) ÷ (- 17)

Exercise 1 (B) | Q 2.7

Evaluate: (- 728) ÷ 14

Exercise 1 (B) | Q 2.8

Evaluate: 272 ÷ (- 17)

Exercise 1 (B) | Q 3.1

Find the quotient of the following division:

299 ÷ 23

Exercise 1 (B) | Q 3.2

Find the quotient of the following division:

299 ÷ (- 23)

Exercise 1 (B) | Q 3.3

Find the quotient of the following division:

(- 384) ÷ 16

Exercise 1 (B) | Q 3.4

Find the quotient of the following division:

(- 572) ÷ (- 22)

Exercise 1 (B) | Q 3.5

Find the quotient of the following division:

408 ÷ (- 17)

Exercise 1 (B) | Q 4.1

Divide:  204 by 17

Exercise 1 (B) | Q 4.2

Divide: 152 by - 19

Exercise 1 (B) | Q 4.3

Divide: 0 by 35

Exercise 1 (B) | Q 4.4

Divide: 0 by - 82

Exercise 1 (B) | Q 4.5

Divide: 5490 by 10

Exercise 1 (B) | Q 4.6

Divide: 762800 by 100

Exercise 1 (B) | Q 5.1

State, true or false for a given statement.

0 ÷ 32 = 0

• True

• False

Exercise 1 (B) | Q 5.2

State, true or false for a given statement.

0 ÷ (- 9) = 0

• True

• False

Exercise 1 (B) | Q 5.3

State, true or false for a given statement.

(- 37) ÷ 0 = 0

• True

• False

Exercise 1 (B) | Q 5.4

State, true or false for a given statement.

0 ÷ 0 = 0

• True

• False

Exercise 1 (B) | Q 6.01

Evaluate: 42 ÷ 7 + 4

Exercise 1 (B) | Q 6.02

Evaluate: 12+18 ÷ 3

Exercise 1 (B) | Q 6.03

Evaluate: 19 – 20 ÷ 4

Exercise 1 (B) | Q 6.04

Evaluate:  16 – 5 x 3 + 4

Exercise 1 (B) | Q 6.05

Evaluate: 6 – 8 – (- 6) ÷ 2

Exercise 1 (B) | Q 6.06

Evaluate: 13 -12 ÷ 4 × 2

Exercise 1 (B) | Q 6.07

Evaluate: 16 + 8 ÷ 4 - 2 x 3

Exercise 1 (B) | Q 6.08

Evaluate: 16 ÷ 8 + 4 – 2 x 3

Exercise 1 (B) | Q 6.09

Evaluate: 16 – 8 + 4 ÷ 2 x 3

Exercise 1 (B) | Q 6.1

Evaluate: (-4) + (-12) ÷ (-6)

Exercise 1 (B) | Q 6.11

Evaluate: (- 18) + 6 ÷ 3 + 5

Exercise 1 (B) | Q 6.12

Evaluate: (-20) x (-1) + 14 ÷ 7

Exercise 1 (C)

### Selina solutions for Concise Mathematics Class 7 ICSE Chapter 1 Integers Exercise 1 (C)

Exercise 1 (C) | Q 1

Evaluate:  18 -(20 - 15 ÷ 3)

Exercise 1 (C) | Q 2

Evaluate: - 15 + 24 ÷ (15 - 13)

Exercise 1 (C) | Q 3

35 – [15 + {14 - (13 + bar(2 - 1 + 3))}]

Exercise 1 (C) | Q 4

27- [13 + {4-(8 + 4 - bar(1 + 3)}]

Exercise 1 (C) | Q 5

32 - [43-{51 - (20 - bar(18 - 7))}]

Exercise 1 (C) | Q 6

46 - [26 - {14 - (15 - 4 ÷ 2 x 2)}]

Exercise 1 (C) | Q 7

45 – [38 – {60 ÷ 3 – (6 – 9 ÷ 3) ÷ 3}]

Exercise 1 (C) | Q 8

17- [17 — {17 — (17 –bar(17 - 17))}]

Exercise 1 (C) | Q 9

2550 – [510 – {270 – (90 – bar(80 + 7))}]

Exercise 1 (C) | Q 10

30 + [{ - 2 xx (25 - bar(13 - 3))}]

Exercise 1 (C) | Q 11

88 - {5 - (- 48) ÷ (- 16)}

Exercise 1 (C) | Q 12

9 xx (8 - bar(3 + 2)) - 2(2 + bar(3 + 3))

Exercise 1 (C) | Q 13

2 – [3 – {6 – (5 – bar(4 - 3))}]

Exercise 1 (D)

### Selina solutions for Concise Mathematics Class 7 ICSE Chapter 1 Integers Exercise 1 (D)

Exercise 1 (D) | Q 1

The sum of two integers is -15. If one of them is 9, find the other.

Exercise 1 (D) | Q 2

The difference between an integer and -6 is -5. Find the values of x.

Exercise 1 (D) | Q 3

The sum of two integers is 28. If one integer is -45, find the other

Exercise 1 (D) | Q 4

The sum of two integers is -56. If one integer is -42, find the other.

Exercise 1 (D) | Q 5

The difference between an integer x and (-9) is 6. Find all possible values of x.

Exercise 1 (D) | Q 6.1

Evaluate: (-1) x (-1) x (-1) x ….60 times

Exercise 1 (D) | Q 6.2

Evaluate: (-1) x (-1) x (-1) x (-1) x ….70 times

Exercise 1 (D) | Q 7.1

Evaluate: (-2) × (-3) × (-4) × (-5) × (-6)

Exercise 1 (D) | Q 7.2

Evaluate: (-3) × (-6) × (-9) × (-12)

Exercise 1 (D) | Q 7.3

Evaluate: (-11) × (-15) + (-11) × (-25)

Exercise 1 (D) | Q 7.4

Evaluate: 10 × (-12) + 5 × (-12)

Exercise 1 (D) | Q 8.1

If x × (-1) = -36, is x positive or negative?

Exercise 1 (D) | Q 8.2

If x × (-1) = 36, is x positive or negative?

Exercise 1 (D) | Q 9

Write all the integers between -15 and 15, which are divisible by 2 and 3.

Exercise 1 (D) | Q 10

Write all the integers between -5 and 5, which are divisible by 2 or 3.

Exercise 1 (D) | Q 11.1

Evaluate: (-20) + (-8) ÷ (-2) × 3

Exercise 1 (D) | Q 11.2

Evaluate: (-5) – (-48) ÷ (-16) + (-2) × 6

Exercise 1 (D) | Q 11.3

Evaluate: 16 + 8 ÷ 4 – 2 × 3

Exercise 1 (D) | Q 11.4

Evaluate: 16 ÷ 8 x 4 – 2 × 3

Exercise 1 (D) | Q 11.5

Evaluate: 27 – [5 + {28 – (29 – 7)}]

Exercise 1 (D) | Q 11.6

Evaluate: 48-[18-{16-(5 –bar(4 + 1))}]

Exercise 1 (D) | Q 11.7

Evaluate: -8 – {- 6 (9 – 11) + 18 ÷ -3}

Exercise 1 (D) | Q 11.8

Evaluate: (24 ÷ bar(12 - 9) - 12) - (3 xx 8 = 4 + 1)

Exercise 1 (D) | Q 12

Find the result of subtracting the sum of all integers between 20 and 30 from the sum of all integers from 20 to 30.

Exercise 1 (D) | Q 13

Add the product of (-13) and (-17) to the quotient of (-187) and 11.

Exercise 1 (D) | Q 14

The product of two integers is-180. If one of them is 12, find the other.

Exercise 1 (D) | Q 15.1

A number changes from -20 to 30. What is the increase or decrease in the number?

Exercise 1 (D) | Q 15.2

A number changes from 40 to - 30. What is the increase or decrease in the number?

## Chapter 1: Integers

Exercise 1 (A)Exercise 1 (B)Exercise 1 (C)Exercise 1 (D)

## Selina solutions for Concise Mathematics Class 7 ICSE chapter 1 - Integers

Selina solutions for Concise Mathematics Class 7 ICSE chapter 1 (Integers) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CISCE Concise Mathematics Class 7 ICSE solutions in a manner that help students grasp basic concepts better and faster.

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Concepts covered in Concise Mathematics Class 7 ICSE chapter 1 Integers are Multiplication and Division of Integers, Concept of Integers, Properties of Operations on Integers, Concept for Commutativity, Associativity, Existence of Identity, Inverse and Distributivity, Problem Solving Using Operations on Integers, Statement Problems on Integers Using All Fundamental Operations..

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