# Number Line Prime Class 7 Solutions Chapter 4

## Number Line Prime Class 7 Solutions Chapter 4 Decimal Numbers

Welcome to NCTB Solutions. Here with this post we are going to help 7th class students for the Solutions of Number Line Prime Class 7 Math Book, Chapter 4, Decimal Numbers. Here students can easily find step by step solutions of all the problems for Decimal Numbers, Exercise 4A, 4B, 4C and 4D Also here our mathematics teacher’s are solved all the problems with easily understandable methods with proper guidance so that all the students can understand easily. Here in this post students will get chapter 4 solutions. Here in this post all the solutions are based on latest Syllabus.

Decimal Numbers Exercise 4A all Question Solutions :

Question no – (1)

Solution :

 number Thou Hun tens once de.po tenths Hun Thou Ten thou (a) 12.628 1 2 . 6 2 8 (b) 1.7396 1 . 7 3 9 6 (c) 408.500 4 0 8 . 5 0 0 (d) 6.336 6 . 3 3 6 (e) 5007.8821 5 0 0 7 . 8 8 2 1 (f) 3079.0356 3 0 7 9 . 0 3 5 6

Question no – (2)

Solution :

(a) 871.32

= 800 + 70 + 10 + 3/10 + 2/100

(b) 22.139

= 20 + 2 + 1/10 + 3/100 + 9/1000

(c) 3.9764

= 3 + 9/10 + 7/100 + 6/1000 + 4/10000

(d) 0.5040

= 0 + 5/10 + 0/100 + 4/1000 + 0/10000

(e) 14.3

= 10 + 4 + 13/10

(f) 715.025

= 700 + 10 + 5 + 0/10 + 2/100 + 5/1000

Question no – (3)

Solution :

(a) 15.726

= Fifteen point seven two six

(b) 418.3756

= Four hundred eighteen point three seven five six

(c) 1.105

= One point one zero five

(d) 20.40

= Twenty point four zero

(e) 74.930

= Seventy four point nine three six

(f) 1062.33

= One thousand sixty two point three.

Decimal Numbers Exercise 4B all Question Solutions :

Question no – (1)

Solution :

(a) 378.96 + 234.35 + 45.6

378.96

234.35

45.6
—————————
658.91

(b) 456.78 + 23.90

456.78

23.90
—————————
480.68

(c) 32.9 + 12.6 + 34.5

32.9

12.6

34.5
—————————
80.0

(d) 200.9 + 100.09 + 25.78

200.9

100.09

25.78
—————————
326.77

Question no – (2)

Solution :

(a) 34.2 from 45.8

45.8

34.2
—————————
11.6

(b) 123.45 from 234.89

234.89

123.89
—————————
111.44

(c) 100.78 from 435.43

435.43

100.78
—————————
334.65

(d) 34.23 from 678.90

678.90

34.23
—————————
644.67

Question no – (3)

Solution :

(a) 12.36 – 386.9 + 2045.874

= 2058.234 – 386.9

= 1671.334

(b) 564.187 – 6579 – 902.231

= 1466.418 – 65.79

= 1400.628

(c) 215.6 + 102.41 – 28.46

= 318.01 – 28.46

= 289.55

(d) 7.6 + 1149 – 0.889

= 1156.6 – 0.889

= 1155.711

Question no – (4)

Solution :

13.450

+12.756
—————————
26.206 L

Thus, in the container there is 26.206 oil is present.

Question no – (5)

Solution :

36.550

10.348
—————————
46.898 g

Hence, She purchase 46.898 g of gold.

Question no – (6)

Solution:

3.640

+4.625
—————————
8.165 kg

Therefore, the total weight will be 8.165 kg

Decimal Numbers Exercise 4C all Question Solutions :

Question no – (1)

Solution :

(a) 125 × 100

= 12500

(b) 12.26 × 10

= 122.6

(c) 126.456 × 100

= 12645.6

(d) 384.1256 × 1000

= 348125.6

Question no – (2)

Solution :

(a) 450.64 × 56

= 25235.84

(b) 332.6 × 24

= 7982.4

(c) 125.26 × 64

= 8016.64

(d) 332.89 × 221

= 73568.69

Question no – (3)

Solution :

(a) 23.4 × 34.6

234

× 346
—————————
1404

936 ×

702 ×
—————————
80964

∴ 23.4 × 34.6

= 809.64

(b) 12.26 × 10

1005

4503
—————————
3015

0000 ×

5025 ×

4020 ×
—————————
4525515

∴ 100.5 × 45.03

= 4525.515

(c) 34.5 × 238.90 × 45.67

34.5 × 238.90 ∴ 45.67

= 376414.42400

(d) 45.8 × 34.2 × 67.9

45.8 × 34.2 × 67.9

= 106355.844

Question no – (4)

Solution :

Price of 1 kg – 35.45

∴ 3.8 kg price,

= 35.48 × 3.8

= 134.824 Rs

Question no – (5)

Solution :

One litter petrol – 40.75

5.2 letter = 40.75 × 5.2

= 211.900 Rs

Question no – (6)

Solution :

Cost of a pen is – 10.5

∴ One book cost

= 10.5 × 5.1

= 53.55 Rs

Cost of 10 books

= 10 × 53.55

= 535.5 Rs

Decimal Numbers Exercise 4D all Question Solutions :

Question no –  (1)

Solution :

(a) 345 ÷ 1000

= 345/1000

= 0.345

(b) 234.5 ÷ 100

= 234.5/100

= 0.2345

(c) 34.5 ÷ 1000

= 34.5/1000

= 0.0345

(d) 657.9 ÷ 10

= 657.9/10

= 65.79

Question no – (2)

Solution :

(a) 68.432 ÷ 12.22

= 68.432/12.22

= 68432/1222 × 100/1000

= 5.6

(b) 2516.81 ÷ 23.09

= 2516.81/23.09

= 251681/2309 × 100/10

= 109

(c) 32.292 ÷ 14.04

= 32.292/14.04

= 32292/1404 × 100/1000

= 23/10

= 2.3

(d) 289.6 ÷ 1.6

= 289.6/1.6

= 2896/16 × 10/10

= 181

Question no – (3)

Solution :

(a) 286.68 ÷ 12

Quotient = 23.89

(b) 300.15 ÷ 23

Quotient = 13.05

(c) 1089 ÷ 4.5

∴ 1089 ÷ 4.5 = 242

(d) 24.79 ÷ 6.7

∴ 24.79 ÷ 6.7

= 3.7

Question no – (4)

Solution :

∴ Each of them get, 4.98

Question no – (5)

Solution :

∴ Price of 12 Fuel = 57

Question no – (6)

Solution :

∴ 179.1 inches 455 cm.

Next Chapter Solution :

Updated: July 25, 2023 — 6:08 am