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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 :
