R s aggarwal mathematics class 7 Solutions for Chapter 3 decimals

Convert the following into a fraction in its simplest form:

.8

Convert the following into a fraction in its simplest form:

.285

Convert the following into a fraction in its simplest form:

.06

Convert the following into a fraction in its simplest form:

.75

Convert the following as a mixed fraction:

4.625

Convert the following as a mixed fraction:

6.004

Convert the following as a mixed fraction:

12.25

Convert the following as a mixed fraction:

5.6

Convert the following into a decimal:

(47/10)

Convert the following into a decimal:

(156/100)

Convert the following into a decimal:

Convert the following into a decimal:

(17/20)

Convert the following into a decimal:

(25/8)

Convert the following into a decimal:

(3524/1000)

Convert the following into a decimal:

Convert each of the following into a decimal:

3.5, 0.67, 15.6, 4

Convert each of the following into a decimal:

6.5, 16.03, 0.274, 119.4

Fill in the place holder with the correct symbol > or <.

1.85……1.80

Fill in the place holder with the correct symbol > or <.

5.68……5.86

Fill in the place holder with the correct symbol > or <.

78.23 ……. 69.85

Fill in the place holder with the correct symbol > or <.

0.98……1.07

Fill in the place holder with the correct symbol > or <.

14.05……14.005

Add:

16, 8.7, 0.94, 6.8 and 7.77

Add:

18.6, 206.37, 8.008, 26.4 and 6.9

Add:

63.5, 9.7, 0.8, 26.66 and 12.17

Add:

17.4, 86,39, 9.435, 8.8 and 0.06

Add:

26.9, 19.74, 231.769 and 0.048

Add:

23.8, 8.94, 0.078 and 214.6

Add:

6.606, 66.6, 666, 0.066, 0.66

Add:

9.09, 0.909, 99.9, 9.99, 0.099

Subtract:

14.79 from 72.43

Subtract:

36.74 from 52.6

Subtract:

13.876 from 22

Find the product:

73.92 × 10

Find the product:

7.54 × 10

Find the product:

0.032 × 10

Find the product:

0.83 × 10

Find the product:

0.7 × 10

Find the product:

84.003 × 10

Find the product:

0.06 × 100

Find the product:

2.397 × 100

Find the product:

0.6 × 100

Find the product:

0.08 × 100

Find the product:

2.9 × 100

Find the product:

6.83 × 100

Find the product:

6.25 × 1000

Find the product:

4.8 × 1000

Find the product:

0.076 × 1000

Find the product:

6.7314 × 1000

Find the product:

0.06 × 1000

Find the product:

0.182 × 1000

Find the product:

5.4 × 16

Find the product:

4.125 × 86

Find the product:

104.06 × 75

Find the product:

3.65 × 19

Find the product:

0.854 × 12

Find the product:

6.032 × 124

Find the product:

0.0146 × 69

Find the product:

36.73 × 48

Find the product:

0.00125 × 327

Find the product:-

0.54 × 0.27

Find the product:-

0.014 × 0.46

Find the product:-

54.5 × 1.76

Find the product:-

0.06 × 0.38

Find the product:-

6.54 × 0.09

Find the product:-

0.568 × 4.9

Find the product:-

3.87 × 1.25

Solution:-

Multiply the two decimals without the decimal point just like whole numbers.

∴ 387 × 125 = 48375

Mark the decimal point in the product in such a way that the number of decimal places in the

product is equal to the sum of the decimal place in the given decimals.

Sum of decimal places in the given decimals = 4

∴ 3.87 × 1.25 = 4.8375

Find the product:-

0.623 × 0.75

Find the product:-

7.6 × 2.4

Find the product:-

0.045 × 2.4

Find the product:-

1.245 × 6.4

Find the product:-

3.45 × 6.3

Find the product:-

11.1 × 1.1 × 0.11

Find the product:-

13 × 1.3 × 0.13

Find the product:-

0.2 × 0.02 × 0.002

Find the product:-

2.1 × 0.21 × 0.021

Find the product:-

2.4 × 1.5 × 2.5

Find the product:-

0.8 × 3.5 × 0.05

Evaluate:

(0.04)2

Evaluate:

(0.11)2

Evaluate:

(1.2)2

Evaluate:

(0.7)2

Evaluate:

(0.05)3

Evaluate:

(1.5)3

Evaluate:

(0.3)3

A bus can cover 62.5 km in one hour. How much distance can it cover in 18 hours?

Divide:

0.08 by 10

Divide:

4.38 by 10

Divide:

131.6 by 10

Divide:

0.062 by 10

Divide:

0.34 by 10

Divide:

32.56 by 10

Divide:

23.4 by 100

Divide:

0.3 by 100

Divide:

4.7 by 100

Divide:

0.02 by 100

Divide:

137.2 by 100

Divide:

0.58 by 100

Divide:

2 by 1000

Divide:

38.9 by 1000

Divide:

1286.5 by 1000

Divide:

0.8 by 1000

Divide:

4.6 by 1000

Divide:

354.16 by 1000

Divide:

101 by 25

Divide:

11 by 16

Divide:

12 by 8

Divide:

63 by 15

Divide:

31 by 40

Divide:

47 by 20

Divide:

1.001 by 14

Divide:

43.2 by 6

Divide:

60.48 by 12

Divide:

0.175 by 25

Divide:

0.3322 by 11

Divide:

0.765 by 9

Divide:

2.575 by 25

Divide:

217.44 by 18

Divide:

2.13 by 15

Divide:

6.08 by 8

Divide:

5.52 by 16

Divide:

117.6 by 21

Divide:

6.54 by 12

Divide:

0.768 by16

Divide:

0.477 by 18

Divide:

16.46 ÷ 20

Divide:

12.8 ÷ 500

Divide:

18.08 ÷ 400

Divide:

19.2 ÷ 80

Divide:

156.8 ÷ 200

Divide:

403.8 ÷ 30

Divide:

21.976 by 1.64

Divide:

11.04 by 1.6

Divide:

2.0484 by 0.18

Divide:

3.28 by 0.8

Divide:

0.076 by 0.19

Divide:

148 by 0.074

Divide:

16.578 by 5.4

Divide:

204 by 0.17

Divide:

28 by 0.56

The total cost of 24 chairs is ₹ 9255.60. Find the cost of each chair.

Divide:

3 by 80

Divide:

6.612 by 11.6

Divide:

25.395 by 1.5

Divide:

0.8085 by 0.35

Divide:

0.228 by 0.38

Divide:

0.288 by 0.9

Mark against the correct answer:

0.06=?

a) 3/5 b) (3/50) c) (3/500) d) None of these

Mark against the correct answer:

1.04 =?

a) [1(1/50)] b) [1(2/5)] c) [1(1/25)] d) None of these

Mark against the correct answer:

[2(2/25)] = ?

a) 2.8 b)2.08 c)2.008 d) None of these

Mark against the correct answer:

6cm =?

a) 0.006km b) 0.0006km c)0.00006km d) none of these

Mark against the correct answer:

70 g =?

a) 0.7 kg b) 0.07 kg c)0.007kg d)none of these

Mark against the correct answer:

5 kg 6g =?

a) 5.0006 kg b) 5.06 kg c)5.006 kg d) 5.6 kg

Mark against the correct answer:

2 km 5 m =?

a) 2.5 km b)2.05km c)2.005km d)2.0005km

Mark against the correct answer:

(1.007-0.7) =?

a) 1 b)0.37 c)0.307 d)None of these

Mark against the correct answer:

What should be subtracted from 0.1 to get 0.03?

a) 0.7 b) 0.07 c)0.007 d)none of these

Mark against the correct answer:

What should be added to 3.07 to get 3.5?

a) 0.57 b)0.34 c)0.43 d)0.02