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

Evaluate:  427 x 8 + 2 x 427

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

Evaluate: 558 x 27 + 3 x 558

Evaluate: 673 x 9 + 673

Evaluate: 1925 x 101 – 1925

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

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

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

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

Evaluate: 15 x 8

Evaluate: 15 x (- 8)

Evaluate: (-15) x  8

Evaluate: (-15) x - 8

Evaluate: 4 x 6 x 8

Evaluate: 4 x 6 x (- 8)

Evaluate: 4 x (- 6) x 8

Evaluate: (- 4) x 6 x 8

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

Evaluate:  (- 4) x (- 6) x 8

Evaluate:  (- 4) x  6 x (- 8)

Evaluate:  (- 4) x (- 6) x (- 8)

Evaluate: 2 x 4 x 6 x 8

Evaluate:  2 x (- 4) x 6 x 8

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

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

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

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

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

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

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

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

15 of them are negative and 3 are positive?

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

12 of them are negative and 6 are positive?

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

9 of them are positive and the remaining are negative?

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

all are negative?

Find which is greater?

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

Find which is greater?

12 × (6 – 8) or 12 × 6 – 8

Find which is greater?

{(-3) – 4} × (-5) or (-3) – 4 × (-5)

State, true or false of the given statement:

product of two integers can be zero.

State, true or false of the given statement:

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

State, true or false of the given statement:

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

State, true or false of the given statement:

(b – c) × a=b – c × a

Divide: 117 by 9

Divide: (- 117) by 9

Divide: 117 by (- 9)

Divide: (- 117) by (- 9)

Divide: 225 by (- 15)

Divide: (- 552) ÷ 24

Divide: (- 798) by (- 21)

Divide: (- 910) ÷ – 26

Evaluate: (- 234) ÷ 13

Evaluate: 234 ÷ (- 13)

Evaluate: (- 234) ÷ (- 13)

Evaluate: 374 ÷ (- 17)

Evaluate: (- 374) ÷ 17

Evaluate: (- 374) ÷ (- 17)

Evaluate: (- 728) ÷ 14

Evaluate: 272 ÷ (- 17)

Find the quotient of the following division:

299 ÷ 23

Find the quotient of the following division:

299 ÷ (- 23)

Find the quotient of the following division:

(- 384) ÷ 16

Find the quotient of the following division:

(- 572) ÷ (- 22)

Find the quotient of the following division:

408 ÷ (- 17)

Divide:  204 by 17

Divide: 152 by - 19

Divide: 0 by 35

Divide: 0 by - 82

Divide: 5490 by 10

Divide: 762800 by 100

State, true or false for a given statement.

0 ÷ 32 = 0

State, true or false for a given statement.

0 ÷ (- 9) = 0

State, true or false for a given statement.

(- 37) ÷ 0 = 0

State, true or false for a given statement.

0 ÷ 0 = 0

Evaluate: 42 ÷ 7 + 4

Evaluate: 12+18 ÷ 3

Evaluate: 19 – 20 ÷ 4

Evaluate:  16 – 5 x 3 + 4

Evaluate: 6 – 8 – (- 6) ÷ 2

Evaluate: 13 -12 ÷ 4 × 2

Evaluate: 16 + 8 ÷ 4 - 2 x 3

Evaluate: 16 ÷ 8 + 4 – 2 x 3

Evaluate: 16 – 8 + 4 ÷ 2 x 3

Evaluate: (-4) + (-12) ÷ (-6)

Evaluate: (- 18) + 6 ÷ 3 + 5

Evaluate: (-20) x (-1) + 14 ÷ 7

Evaluate:  18 -(20 - 15 ÷ 3)

Evaluate: - 15 + 24 ÷ (15 - 13)

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

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

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

46 - [26 - {14 - (15 - 4 ÷ 2 x 2)}]

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

`17- [17 — {17 — (17 –bar(17 - 17))}]` 

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

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

88 - {5 - (- 48) ÷ (- 16)}

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

`2 – [3 – {6 – (5 – bar(4 - 3))}]`

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

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

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

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

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

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

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

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

Evaluate: (-3) × (-6) × (-9) × (-12)

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

Evaluate: 10 × (-12) + 5 × (-12)

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

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

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

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

Evaluate: (-20) + (-8) ÷ (-2) × 3

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

Evaluate: 16 + 8 ÷ 4 – 2 × 3

Evaluate: 16 ÷ 8 x 4 – 2 × 3

Evaluate: 27 – [5 + {28 – (29 – 7)}]

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

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

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

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

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

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

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

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