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**Mathsight Class 7 Solutions Chapter 4 Decimals**

Welcome to NCTB Solutions. Here with this post we are going to help 7th class students to solve MathSight Class 7 Mathematics Book, Chapter 4, Decimals. Here students can easily get all the exercise questions solution for Chapter 4, Decimals Exercise 4.1, 4.2 and 4.3

**Decimals Exercise 4.1 Solution : **

**Question no – (1)**

**Solution :**

Correct option – (c)

= 0.4 × 0.5

= 0.20

**Question no – (2)**

**Solution :**

**(a)** 3 decimal

**(b)** 4 decimal

**(c)** 5 decimal

**(d)** 6 decimal

**Question no – (3)**

**Solution :**

**(a)** 7.6 × 12

= 91.2

∴ The product is 91.2

**(b)** 7.88 × 14

= 110.32

∴ The product is 110.32

**(c)** 0.59 × 88

= 51.92

∴ The product is 51.92

**(d)** 1.1 × 110

= 121

∴ The product is 121

**(e)** 7.01 × 1.1

= 7.711

∴ The product is 7.711

**(f)** 175.4 × 2.3

= 403.42

∴ The product is 403.42

**(g)** 64.87 × 1.01

= 65.51

∴ The product is 65.51

**(h)** 99.01 × 0.001

= 0.099

∴ The product is 0.099

**(i)** 0.045 × 10

= 0.45

∴ The product is 0.45

**(j)** 88.8 × 100

= 8880

∴ The product is 8880

**(k)** 7.594 × 100

= 759.4

∴ The product is 759.4

**(l)** 88.8 × 100

= 88,8000

∴ The product is 88,8000

**(m)** 4.359 × 1

= 4.359

∴ The product is 4.359

**(n)** 0.15 × 0

= 0

∴ The product is 0

**(o)** 0.001 × 1

= 0.001

∴ The product is 0.001

**Question no – (4)**

**Solution : **

**(a)** 950.62

**(b)** 95.062

**(c)** 950.62

**(d)** 9.5062

**Question no – (5)**

**Solution :**

1.25 × 7

= 8.75 > 7

**Question no – (6)**

**Solution :**

= 1.7 × 2.4

= 4.08

**Question no – (7)**

**Solution :**

Weigh = 60 × 0.167

= 10.02 kg

Hence, the weigh of the astronaut will be 10.02 kg

**Question no – (8)**

**Solution :**

1 week = 7 day

∴ 7 day’s growth,

= 1.15 × 7

= 8.05 feet

Therefore, the growth of the plant will be 8.05 feet in 1 week.

**Question no – (9)**

**Solution :**

45 day’s growth,

= 45 × 0.1

= 4.5 mm

90 day’s growth,

= 90 × 0.1

= 9 mm

**Question no – (10)**

**Solution :**

Distance,

= 8.45 × 1.67

= 14.1115 cm

**Question no – (11)**

**Solution :**

Gold contain in 22 karat,

= 0.916 × 25.6

= 23.4496 gm,

Gold contain in 14 karat,

= 0.585 × 25.6

= 14.976 gm,

∴ 22 karat > 14 karat .

**Question no – (12)**

**Solution :**

**(a)** Distance,

= 15.26 × 15.24

= 232.56 km.

**(b)** Distance,

= 20.45 × 10.5

= 214.725 km.

**Decimals Exercise 4.2 Solution : **

**Question no – (1)**

**Solution :**

**(b)** 2.4 / 0.8 = 3

**Question no – (2)**

**Solution :**

**(a)** 46.5

**(b)** 0.58

**(c)** 12.61

**(d)** 754.66

**Question no – (3)**

**Solution :**

**(a)** 16.458/100 = 0.016458

**(b)** 745.3/100 = 0.7453

**(c)** 9.59/100 = 0.0959

**(d)** 5.55/100 = 0.0555

**(e)** 0.017/100 = 0.00017

**(f)** 75/1000 = 0.075

**(g)** 593.5/1000 = 0.05935

**(h)** 0.59/1000 = 0.0059

**Question no – (4)**

**Solution :**

**(a)** 1.254

**(b)** 1.247

**(c)** 0.1968

**(d)** 0.041

**(e)** 0.217

**(f)** 0.51

**(g)** 0.6

**(h)** 0.75

**(i)** 8.4

**(j)** 15.96

**(k)** 0.0006

**(l)** 0.1138

**Question no – (5)**

**Solution :**

= 60.96/2.54

= 24 inch.

∴ 60.96 cm = 24 inch

**Question no – (6)**

**Solution :**

Other,

= 18.576/5.4

= 3.44

Thus, the other number will be 3.44

**Question no – (7)**

**Solution :**

Distance in 1 hr,

= 198.22/4.4

= 45.05 km.

Therefore, the car will cover 45.05 km in 1 hour.

**Question no – (8)**

**Solution :**

Sheela bought,

= 4005 ml

= 4.005 l

Joshi bought,

= 4050 ml

= 4.050 l

∴ Joshi > Sheela .

**Question no – (9)**

**Solution :**

Distance in 1L

= 331.25 / 25

= 13.25 km.

Hence, the bus will cover 13.25 km in 1 litre petrol.

**Question no – (10)**

**Solution :**

7.534 g = 7534 mg .

∴ 7534 > 5300

∴ 7534 – 5300

= 2234 mg

**Question no – (11)**

**Solution :**

1.75 kg = 1750 g.

∴ Numbers of pineapple,

= 1750/250

= 7

Thus, Ella can make 7 cakes

**Question no – (12)**

**Solution :**

**(a)** 0.20/0.125

= 1.6 time faster.

**(b)** Rohit take pic,

= 0.125/2.5

= 0.05

**Decimals Exercise 4.3 Solution : **

**Question no – (1)**

**Solution :**

**(a)** 5.43 km = 5430 m.

**(b)** 0.75 km = 750 m .

**(c)** 0.042 m = 4.2 cm .

**(d)** 9.32 m = 932 cm .

**(e)** 0.5 cm = 5 mm.

**(f)** 1.2 m = 1200 mm.

**Question no – (2)**

**Solution :**

**(a)** 4.635 kg = 4635 g

**(b)** 7.50 kg = 7500 g

**(c)** 0.385 kg = 385 g

**(d)** 0.159 kL = 159 L

**(e)** 4.55 L = 4550 ml

**(f)** 0.95 L = 950 mL

**Previous Chapter Solution : **