R d sharma solutions mathematics class 7 Solutions for Chapter 1 integers

Determine each of the following products:

(i) 12 × 7

(ii) (-15) × 8

(iii) (-25) × (-9)

(iv) 125 × (-8)

Determine each of the following products:

(i) 12 × 7

(ii) (-15) × 8

(iii) (-25) × (-9)

(iv) 125 × (-8)

Find the value of

16 + 8 ÷ 4 – 2 × 3

Find each of the followingproducts:

(i) 3 × (-8) × 5

(ii) 9 × (-3) × (-6)

(iii) (-2) × 36 × (-5)

(iv) (-2) × (-4) × (-6) × (-8)

Find each of the following products:

(i) 3 × (-8) × 5

(ii) 9 × (-3) × (-6)

(iii) (-2) × 36 × (-5)

(iv) (-2) × (-4) × (-6) × (-8)

Find the value of:

(i) 1487 × 327 + (-487) × 327

(ii) 28945 × 99 – (-28945)

Find the value of:

(i) 1487 × 327 + (-487) × 327

(ii) 28945 × 99 – (-2894

Complete the following multiplication table:

                  Second number 

First number

Is the multiplication table symmetrical about the diagonal joining the upper left corner to the lower right corner?

Complete the following multiplication table:

Is the multiplication table symmetrical about the diagonal joining the upper left corner to the lower right corner?

Determine the integer whose product with ‘-1’ is

(i) 58

(ii) 0

(iii) -225

Determine the integer whose product with ‘-1’ is

(i) 58

(ii) 0

(iii) -225

Divide:

(i) 102 by 17

(ii) -85 by 5

(iii) -161 by -23

(iv) 76 by -19

(v) 17654 by -17654

(vi) (-729) by (-27)

(vii) 21590 by -10

(viii) 0 by -135

Divide:

(i) 102 by 17

(ii) -85 by 5

(iii) -161 by -23

(iv) 76 by -19

(v) 17654 by -17654

(vi) (-729) by (-27)

(vii) 21590 by -10

(viii) 0 by -135

Find the value of

36 ÷ 6 + 3

36 ÷ 6 + 3

Find the value of

24 + 15 ÷ 3

24 + 15 ÷ 3

120 – 20 ÷ 4

Find the value of

120 – 20 ÷ 4

32 – (3 × 5) + 4

Find the value of

32 – (3 × 5) + 4

Find the value of

3 – (5 – 6 ÷ 3)

3 – (5 – 6 ÷ 3)

Find the value of

21 – 12 ÷ 3 × 2

21 – 12 ÷ 3 × 2

Find the value of

28 – 5 × 6 + 2

Find the value of

(-20) × (-1) + (-28) ÷ 7

Find the value of

(-2) + (-8) ÷ (-4)

Find the value

(-15) + 4 ÷ (5 – 3)

Find the value of

(-40) × (-1) + (-28) ÷ 7

Find the value

(-3) + (-8) ÷ (-4) -2 × (-2)

Find the value

(-3) × (-4) ÷ (-2) + (-1)

Simplify each of the following: 3 – (5 – 6 ÷ 3)

Simplify each of the following:

-25 + 14 ÷ (5 – 3)

Simplify

Simplify

Simplify

36 – [[18 – { 14 – (15 – 4 % 2 x 2)}]]

Simplify

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

Simplify

Simpliyfy

Simplify

Simplify

22– 1/4 {-5 – (-48) % (-16)}

Simplify

Simplify

[29 – (-2) {6 – (7-3)}] ÷ [3 × {5 + (-3) x (-2)}]

Using brackets, write a mathematical expression for each of the following:

(i) Nine multiplied by the sum of two and five.

(ii) Twelve divided by the sum of one and three.

(iii) Twenty divided by the difference of seven and two.

(iv) Eight subtracted from the product of two and three.

(v) Forty divided by one more than the sum of nine and ten.

(vi) Two multiplied by one less than the difference of nineteen andsix. Solution: