# Selina solutions for Concise Mathematics Class 7 ICSE chapter 4 - Decimal Fractions (Decimals) [Latest edition]

#### Chapters ## Chapter 4: Decimal Fractions (Decimals)

Exercise 4 (A)Exercise 4 (B)Exercise 4 (C)Exercise 4 (D)Exercise 4 (E)Exercise 4 (F)
Exercise 4 (A)

### Selina solutions for Concise Mathematics Class 7 ICSE Chapter 4 Decimal Fractions (Decimals) Exercise 4 (A)

Exercise 4 (A) | Q 1.1

Convert the following into fraction in their lowest term: 3.75

Exercise 4 (A) | Q 1.2

Convert the following into fraction in their lowest term: 0.5

Exercise 4 (A) | Q 1.3

Convert the following into fraction in their lowest term: 2.04

Exercise 4 (A) | Q 1.4

Convert the following into fraction in their lowest term: 0.65

Exercise 4 (A) | Q 1.5

Convert the following into fraction in their lowest term: 2.405

Exercise 4 (A) | Q 1.6

Convert the following into fraction in their lowest term:  0.085

Exercise 4 (A) | Q 1.7

Convert the following into fraction in their lowest term:  8.025

Exercise 4 (A) | Q 2.1

Convert into decimal fractions 2 4/5

Exercise 4 (A) | Q 2.2

Convert into decimal fractions 79/100

Exercise 4 (A) | Q 2.3

Convert into decimal fractions 37/10000

Exercise 4 (A) | Q 2.4

Convert into decimal fractions 7543/10^4

Exercise 4 (A) | Q 2.5

Convert into decimal fractions 3/4

Exercise 4 (A) | Q 2.6

Convert into decimal fractions 9 3/5

Exercise 4 (A) | Q 2.7

Convert into decimal fractions 8 5/8

Exercise 4 (A) | Q 2.8

Convert into decimal fractions 5 7/8

Exercise 4 (A) | Q 3.1

Write the number of decimal places in: 0.4762

Exercise 4 (A) | Q 3.2

Write the number of decimal places in: 7.00349

Exercise 4 (A) | Q 3.3

Write the number of decimal places in: 8235.403

Exercise 4 (A) | Q 3.4

Write the number of decimal places in: 35.4

Exercise 4 (A) | Q 3.5

Write the number of decimal places in: 2.608

Exercise 4 (A) | Q 3.6

Write the number of decimal places in: 0.000879

Exercise 4 (A) | Q 4.1

Write the following decimals as word statements: 0.4, 0.9, 0.1

Exercise 4 (A) | Q 4.2

Write the following decimals as word statements: 1.9, 4.4, 7.5

Exercise 4 (A) | Q 4.3

Write the following decimal as word statement: 0.02, 0.56, 13.06

Exercise 4 (A) | Q 4.4

Write the following decimal as word statement: 0.005,0.207, 111.519

Exercise 4 (A) | Q 4.5

Write the following decimal as word statement: 0.8, 0.08, 0.008, 0.0008

Exercise 4 (A) | Q 4.6

Write the following decimal as word statement: 256.1, 10.22, 0.634

Exercise 4 (A) | Q 5.1

Convert the given fraction into like a fraction:

0.5, 3.62, 43.987 and 232.0037

Exercise 4 (A) | Q 5.2

Convert the given fraction into like a fraction:

215.78, 33.0006, 530.3 and 0.03569

Exercise 4 (B)

### Selina solutions for Concise Mathematics Class 7 ICSE Chapter 4 Decimal Fractions (Decimals) Exercise 4 (B)

Exercise 4 (B) | Q 1.01

Exercise 4 (B) | Q 1.02

Exercise 4 (B) | Q 1.03

Exercise 4 (B) | Q 1.04

Add: 0. 4136, 0. 3195 and 0.52

Exercise 4 (B) | Q 1.05

Exercise 4 (B) | Q 1.06

Exercise 4 (B) | Q 1.07

Exercise 4 (B) | Q 1.08

Add: 6.08, 60.8, 0.608 and 0.0608

Exercise 4 (B) | Q 1.09

Add: 29.03, 0.0003, 0.3 and 7.2

Exercise 4 (B) | Q 1.1

Add: 3.4, 2.025, 9.36 and 3.6221

Exercise 4 (B) | Q 2.01

Subtract the first number from the second:

5.4, 9.8

Exercise 4 (B) | Q 2.02

Subtract the first number from the second:

0.16, 4.3

Exercise 4 (B) | Q 2.03

Subtract the first number from the second:

0.82, 8.6

Exercise 4 (B) | Q 2.04

Subtract the first number from the second:

0.07, 8.43

Exercise 4 (B) | Q 2.05

Subtract the first number from the second:

2.237, 9.425

Exercise 4 (B) | Q 2.06

Subtract the first number from the second:

41.03, 59.46

Exercise 4 (B) | Q 2.07

Subtract the first number from the second:

3.92, 26.86

Exercise 4 (B) | Q 2.08

Subtract the first number from the second:

4.73, 8.5

Exercise 4 (B) | Q 2.09

Subtract the first number from the second:

12.63, 36.2

Exercise 4 (B) | Q 2.1

Subtract the first number from the second:

0.845, 3.71

Exercise 4 (B) | Q 3.1

Simplify: 28.796 -13.42 – 2.555

Exercise 4 (B) | Q 3.2

Simplify: 93.354 – 62.82 – 13.045

Exercise 4 (B) | Q 3.3

Simplify: 36 – 18.59 – 3.2

Exercise 4 (B) | Q 3.4

Simplify: 86 + 16.95 – 3.0042

Exercise 4 (B) | Q 3.5

Simplify: 32.8 – 13 – 10.725 +3.517

Exercise 4 (B) | Q 3.6

Simplify: 4000 – 30.51 – 753.101 – 69.43

Exercise 4 (B) | Q 3.7

Simplify: 0.1835 + 163.2005 – 25.9 – 100

Exercise 4 (B) | Q 3.8

Simplify: 38.00 – 30 + 200.200 – 0.230

Exercise 4 (B) | Q 3.9

Simplify: 555.555 + 55.555 – 5.55 – 0.555

Exercise 4 (B) | Q 4

Find the difference between 6.85 and 0.685.

Exercise 4 (B) | Q 5

Take out the sum of 19.38 and 56.025 then subtract it from 200.111.

Exercise 4 (B) | Q 6

Add 13.95 and 1.003; and from the result, subtract the sum of 2.794 and 6.2.

Exercise 4 (B) | Q 7

What should be added to 39.587 to give 80.375?

Exercise 4 (B) | Q 8

What should be subtracted from 100 to give 19.29?

Exercise 4 (B) | Q 9

What is the excess of 584.29 over 213.95?

Exercise 4 (B) | Q 10.1

Evaluate: (5.4 – 0.8) + (2.97 -1.462)

Exercise 4 (B) | Q 10.2

Evaluate: (6.25 + 0.36) - (17.2 – 8.97)

Exercise 4 (B) | Q 10.3

Evaluate: 9.001 + (3 - 2.462)

Exercise 4 (B) | Q 10.4

Evaluate: 879.4 – (87.94 – 8 .794)

Exercise 4 (B) | Q 11

What is the excess of 75 over 48.29?

Exercise 4 (B) | Q 12

If A = 237.98 and B = 83.47.

Find: (i) A - B  (ii) B - A

Exercise 4 (B) | Q 13

The cost of one kg of sugar increases from 28.47 to 32.65. Find the increase in cost.

Exercise 4 (C)

### Selina solutions for Concise Mathematics Class 7 ICSE Chapter 4 Decimal Fractions (Decimals) Exercise 4 (C)

Exercise 4 (C) | Q 1.1

Multiply:  0.87 by 10

Exercise 4 (C) | Q 1.2

Multiply: 2.948 by 100

Exercise 4 (C) | Q 1.3

Multiply: 6.4 by 1000

Exercise 4 (C) | Q 1.4

Multiply: 5.8 by 4

Exercise 4 (C) | Q 1.5

Multiply: 16.32 by 28

Exercise 4 (C) | Q 1.6

Multiply: 5.037 by 8

Exercise 4 (C) | Q 1.7

Multiply: 4.6 by 2.1

Exercise 4 (C) | Q 1.8

Multiply: 0.568 by 6.4

Exercise 4 (C) | Q 2.1

Multiply the number by 10, 100, 1000: 0.5

Exercise 4 (C) | Q 2.2

Multiply the number by 10, 100, 1000: 0.112

Exercise 4 (C) | Q 2.3

Multiply the number by 10, 100, 1000: 4.8

Exercise 4 (C) | Q 2.4

Multiply the number by 10, 100, 1000: 0.0359

Exercise 4 (C) | Q 2.5

Multiply the number by 10, 100, 1000: 16.27

Exercise 4 (C) | Q 2.6

Multiply the number by 10, 100, 1000: 234.8

Exercise 4 (C) | Q 3.1

Evaluate: 5.897 x 2.3

Exercise 4 (C) | Q 3.2

Evaluate: 0.894 x 87

Exercise 4 (C) | Q 3.3

Evaluate: 0.01 × 0.001

Exercise 4 (C) | Q 3.4

Evaluate: 0.84 × 2.2 × 4

Exercise 4 (C) | Q 3.5

Evaluate: 4.75 x 0.08 x 3

Exercise 4 (C) | Q 3.6

Evaluate: 2.4 × 3.5 × 4.8

Exercise 4 (C) | Q 3.7

Evaluate: 0.8 × 1.2 × 0.25

Exercise 4 (C) | Q 3.8

Evaluate: 0.3 × 0.03 × 0.003

Exercise 4 (C) | Q 3.9

Evaluate: 12.003 × (0.2)5

Exercise 4 (C) | Q 4.1

Divide: 54.9 by 10

Exercise 4 (C) | Q 4.2

Divide: 7.8 by 100

Exercise 4 (C) | Q 4.3

Divide: 324.76 by 1000

Exercise 4 (C) | Q 4.4

Divide: 12.8 by 4

Exercise 4 (C) | Q 4.5

Divide: 27.918 by 9

Exercise 4 (C) | Q 4.6

Divide: 4.672 by 8

Exercise 4 (C) | Q 4.7

Divide: 4.32 by 1.2

Exercise 4 (C) | Q 4.8

Divide: 7.644 by 1.4

Exercise 4 (C) | Q 4.9

Divide: 4.8432 by 0.08

Exercise 4 (C) | Q 5.1

Divide the given number by 10, 100, 1000 and 10000
2.1

Exercise 4 (C) | Q 5.2

Divide the given number by 10, 100, 1000 and 10000
8.64

Exercise 4 (C) | Q 5.3

Divide the given number by 10, 100, 1000 and 10000
5.01

Exercise 4 (C) | Q 5.4

Divide the given number by 10, 100, 1000 and 10000
0.0906

Exercise 4 (C) | Q 5.5

Divide the given number by 10, 100, 1000 and 10000
0.125

Exercise 4 (C) | Q 5.6

Divide the given number by 10, 100, 1000 and 10000
111.11

Exercise 4 (C) | Q 5.7

Divide the given number by 10, 100, 1000 and 10000
0.848 x 3

Exercise 4 (C) | Q 5.8

Divide the given number by 10, 100, 1000 and 10000
4.906 x (0.2) ²

Exercise 4 (C) | Q 5.9

Divide the given number by 10, 100, 1000 and 10000
(1.2)² x(0.9)²

Exercise 4 (C) | Q 6.01

Evaluate: 9.75 ÷ 5

Exercise 4 (C) | Q 6.02

Evaluate: 4.4064 ÷ 4

Exercise 4 (C) | Q 6.03

Evaluate: 27.69 ÷ 30

Exercise 4 (C) | Q 6.04

Evaluate: 19.25 ÷ 25

Exercise 4 (C) | Q 6.05

Evaluate: 20.64 ÷ 16

Exercise 4 (C) | Q 6.06

Evaluate: 3.204 ÷ 9

Exercise 4 (C) | Q 6.07

Evaluate: 0.125 ÷ 25

Exercise 4 (C) | Q 6.08

Evaluate: 0.14616 ÷ 72

Exercise 4 (C) | Q 6.09

Evaluate: 0.6227 ÷ 1300

Exercise 4 (C) | Q 6.1

Evaluate: 257.894 ÷ 0.169

Exercise 4 (C) | Q 6.11

Evaluate: 6.3 ÷ (0.3)2

Exercise 4 (C) | Q 7.1

Evaluate: 4.3 x 0.52 x 0.3

Exercise 4 (C) | Q 7.2

Evaluate: 3.2 x 2.5 x 0.7

Exercise 4 (C) | Q 7.3

Evaluate: 0.8 x 1.5 x 0.6

Exercise 4 (C) | Q 7.4

Evaluate: 0.3 x 0.3 x 0.3

Exercise 4 (C) | Q 7.5

Evaluate: 1.2 x 1.2 x 0.4

Exercise 4 (C) | Q 7.6

Evaluate: 0.4 x 0.04 x 0.004

Exercise 4 (C) | Q 7.7

Evaluate: 0.5 x 0.6 x 0.7

Exercise 4 (C) | Q 7.8

Evaluate: 0.5 x 0.06 x 0.007

Exercise 4 (C) | Q 8.1

Evaluate: (0.9)²

Exercise 4 (C) | Q 8.2

Evaluate: (0.6)² x 0.5

Exercise 4 (C) | Q 8.3

Evaluate: 0.3 x (0.5)2

Exercise 4 (C) | Q 8.4

Evaluate: (0.4)³

Exercise 4 (C) | Q 8.5

Evaluate: (0.2)3 x 5

Exercise 4 (C) | Q 8.6

Evaluate: (0.2)3 x 0.05

Exercise 4 (C) | Q 9

Find the cost of 36.75 kg wheat at the rate of ₹12.80 per kg.

Exercise 4 (C) | Q 10

The cost of a pen is ₹56.15. Find the cost of 16 such pens.

Exercise 4 (C) | Q 11.1

Evaluate: 0.0072 ÷ 0.06

Exercise 4 (C) | Q 11.2

Evaluate: 0.621 ÷ 0.3

Exercise 4 (C) | Q 11.3

Evaluate: 0.0532 ÷ 0.005

Exercise 4 (C) | Q 11.4

Evaluate: 0.01162 ÷ 0.14

Exercise 4 (C) | Q 11.5

Evaluate: (7.5 x 40.4) ÷ 25

Exercise 4 (C) | Q 11.6

Evaluate: 2.1 ÷ (0.1 x 0.1)

Exercise 4 (C) | Q 12

Fifteen indentical articles weigh 31.50 kg. Find the weight of each article.

Exercise 4 (C) | Q 13

The product of two numbers is 211.2. If one of these two numbers is 16.5, find the other number.

Exercise 4 (C) | Q 14

One dozen identical articles cost ₹45.96. Find the cost of each article.

Exercise 4 (D)

### Selina solutions for Concise Mathematics Class 7 ICSE Chapter 4 Decimal Fractions (Decimals) Exercise 4 (D)

Exercise 4 (D) | Q 1.1

Find whether the given division forms a terminating decimal or a non-terminating decimal:

3 ÷ 8

Exercise 4 (D) | Q 1.2

Find whether the given division forms a terminating decimal or a non-terminating decimal:

8 ÷ 3

Exercise 4 (D) | Q 1.3

Find whether the given division forms a terminating decimal or a non-terminating decimal:

6 ÷ 5

Exercise 4 (D) | Q 1.4

Find whether the given division forms a terminating decimal or a non-terminating decimal:

5 ÷ 6

Exercise 4 (D) | Q 1.5

Find whether the given division forms a terminating decimal or a non-terminating decimal:

12.5 ÷ 4

Exercise 4 (D) | Q 1.6

Find whether the given division forms a terminating decimal or a non-terminating decimal:

23 ÷ 0.7

Exercise 4 (D) | Q 1.7

Find whether the given division forms a terminating decimal or a non-terminating decimal:

42 ÷ 9 = 4.666...

Exercise 4 (D) | Q 1.8

Find whether the given division forms a terminating decimal or a non-terminating decimal:

0.56 ÷ 0.11

Exercise 4 (D) | Q 2.1

Express as recurring decimal: 1 1/3

Exercise 4 (D) | Q 2.2

Express as recurring decimal: 10/11

Exercise 4 (D) | Q 2.3

Express as recurring decimal: 5/6

Exercise 4 (D) | Q 2.4

Express as recurring decimal: 2/13

Exercise 4 (D) | Q 2.5

Express as recurring decimal: 1/9

Exercise 4 (D) | Q 2.6

Express as recurring decimal: 17/90

Exercise 4 (D) | Q 2.7

Express as recurring decimal: 5/18

Exercise 4 (D) | Q 2.8

Express as recurring decimal: 7/12

Exercise 4 (D) | Q 3.1

Convert into vulgar fraction: 0.bar3

Exercise 4 (D) | Q 3.2

Convert into vulgar fraction: 0.bar8

Exercise 4 (D) | Q 3.3

Convert into vulgar fraction: 4.bar4

Exercise 4 (D) | Q 3.4

Convert into vulgar fraction: 23.bar7

Exercise 4 (D) | Q 4.1

Convert into vulgar fraction: 0.bar35

Exercise 4 (D) | Q 4.2

Convert into vulgar fraction: 2.bar23

Exercise 4 (D) | Q 4.3

Convert into vulgar fraction: 1.bar28

Exercise 4 (D) | Q 4.4

Convert into vulgar fraction: 5.bar234

Exercise 4 (D) | Q 5.1

Convert into vulgar fraction: 0.3bar7

Exercise 4 (D) | Q 5.2

Convert into vulgar fraction: 0.2bar45

Exercise 4 (D) | Q 5.3

Convert into vulgar fraction: 0.68bar5

Exercise 4 (D) | Q 5.4

Convert into vulgar fraction: 0.4bar42

Exercise 4 (E)

### Selina solutions for Concise Mathematics Class 7 ICSE Chapter 4 Decimal Fractions (Decimals) Exercise 4 (E)

Exercise 4 (E) | Q 1.1

Round off: 0 .07, 0.112, 3.59, 9.489 to the nearest tenths.

Exercise 4 (E) | Q 1.2

Round off: 0.627, 100.479, 0 065 and 0.024 to the nearest hundredths.

Exercise 4 (E) | Q 1.3

Round off: 4.83,0.86,451 .943 and 9.08 to the nearest whole number.

Exercise 4 (E) | Q 2.1

18 .35 x 1.2

Exercise 4 (E) | Q 2.2

62.89 x 0.02

Exercise 4 (E) | Q 3.1

Write the number of significant figures (digits) in 35.06.

Exercise 4 (E) | Q 3.2

Write the number of significant figures (digits) in 0.35.

Exercise 4 (E) | Q 3.3

Write the number of significant figures (digits) in 7.0068.

Exercise 4 (E) | Q 3.4

Write the number of significant figures (digits) in 19 .0.

Exercise 4 (E) | Q 3.5

Write the number of significant figures (digits) in 0.0062.

Exercise 4 (E) | Q 3.6

Write the number of significant figures (digits) in 0 4.2 x 0.6

Exercise 4 (E) | Q 3.7

Write the number of significant figures (digits) in 0.08 x 25.

Exercise 4 (E) | Q 3.8

Write the number of significant figures (digits) in 3.6 ÷ 0.12.

Exercise 4 (E) | Q 4.1

Write 35.869,0 008426,4.952 and 382.7, correct to three significant figures.

Exercise 4 (E) | Q 4.2

Write 60.974. 2.8753, 0.001789 and 400.04, correct to four significant figure.

Exercise 4 (E) | Q 4.3

Write 14.29462, 19.2, 46356.82 and 69, correct to five significant figures.

Exercise 4 (F)

### Selina solutions for Concise Mathematics Class 7 ICSE Chapter 4 Decimal Fractions (Decimals) Exercise 4 (F)

Exercise 4 (F) | Q 1

The weight of an object is 3 .06 kg. Find the total weight of 48 similar objects.

Exercise 4 (F) | Q 2

Find die cost of 17.5 m cloth at the rate of Rs. 112.50 per meter.

Exercise 4 (F) | Q 3

One kilogram of oil costs Rs. 73.40. Find the cost of 9.75 kilograms of oil.

Exercise 4 (F) | Q 4

Total weight of 8 identical objects is 51.2 kg. Find the weight of each object.

Exercise 4 (F) | Q 5

18.5 m of cloth costs Rs. 666. Find the cost of 3.8 m cloth.

Exercise 4 (F) | Q 6.1

Find die value of:  0.5 of Rs. 7.60 + 1.62 of Rs. 30

Exercise 4 (F) | Q 6.2

Find die value of: 2.3 of 7.3 kg + 0.9 of 0.48 kg

Exercise 4 (F) | Q 6.3

Find die value of: 6.25 of 8.4 – 4.7 of 3.24

Exercise 4 (F) | Q 6.4

Find die value of: 0.98 of 235 – 0 .09 of 3.2

Exercise 4 (F) | Q 7.1

Evaluate: 5.6 – 1 .5 of 3.4

Exercise 4 (F) | Q 7.2

Evaluate: 4.8 ÷ 0.04 of 5

Exercise 4 (F) | Q 7.3

Evaluate: 0.72 of 80 ÷ 0.2

Exercise 4 (F) | Q 7.4

Evaluate: 0.72 ÷ 80 of 0.2

Exercise 4 (F) | Q 7.5

Evaluate: 6.45 + (3.9 – 1.75)

Exercise 4 (F) | Q 7.6

Evaluate: 0.12 of(0.104 – 0.02)+ 0.36 x 0.5

## Chapter 4: Decimal Fractions (Decimals)

Exercise 4 (A)Exercise 4 (B)Exercise 4 (C)Exercise 4 (D)Exercise 4 (E)Exercise 4 (F) ## Selina solutions for Concise Mathematics Class 7 ICSE chapter 4 - Decimal Fractions (Decimals)

Selina solutions for Concise Mathematics Class 7 ICSE chapter 4 (Decimal Fractions (Decimals)) 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 4 Decimal Fractions (Decimals) are Concept for Multiplication, Division of Decimal Numbers, Concept of Decimal Numbers.

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