# RD Sharma Class 7 ex 3.1 Solutions Chapter 3 Decimals

In this chapter, we provide RD Sharma Class 7 ex 3.1 Solutions Chapter 3 Decimals for English medium students, Which will very helpful for every student in their exams. Students can download the latest RD Sharma Class 7 ex 3.1 Solutions Chapter 3 Decimals Maths pdf, Now you will get step by step solution to each question.

# Chapter 3: Decimals Exercise – 3.1

### Question: 1

Write each of the following as decimals:

(i)  8/100

### Solution:

(i)  8/100

Mark the decimal point two places from right to left

Mark the decimal point one place from right to left

9/10 = 0.9

4/100

Mark the decimal point two places from right to left

4/100

= 0.04

Convert 2/10 and 6/1000 into decimals

2/10

Mark the decimal point one place from right to left

2/10

= 0.2

6/1000

Mark the decimal point three places from right to left

6/1000

= 0.006

23, 0.2, 0.006 are unlike decimals. So we convert them into like decimals.

### Question: 2

Convert each of the following into fractions in the lowest form:

(i) 0.04

(ii) 2.34

(iii) 0.342

(iv) 17.38

(i) 0.04

= 0.04/1

= 4/100

= 1/25

(ii) 2.34

= 2.34/1

= 234/100

= 117/50

(iii) 0.342

= 0.342/1

= 342/1000

= 171/500

(iv) 17.38

=17.38/1

= 1738/100

= 869/50

### Question: 3

Express the following fractions as decimals:

(i)  23/10

(i)  23/10

= 23/10

= 2.3

### Question: 4

(i) 41.8, 39.24, 5.01 and 62.6

(ii) 18.03, 146.3, 0.829 and 5.324

(i) 148.65

(ii) 170.483

### Question: 5

Find the value of:

(i) 9.756 – 6.28

(ii) 48.1- 0.37

(iii) 108.032 – 86.8

(iv) 100 – 26.32

(i) 3.476

(ii) 47.73

(iii) 21.232

(iv) 73.68

### Question: 6

Take out 3.547 from 7.2

3.653

### Question: 7

What is to be added to 36.85 to get 59.41?

### Solution:

x + 36.85 = 59.41

x = 59.41-36.85

x = 22.56

Therefore 22.56 is added to 36.85 to get 59.41

### Question: 8

What is to be subtracted from 17.1 to get 2.051?

### Solution:

17.1- x = 2.051

17.1 = x + 2.051

x = 17.1 – 2.051

x = 15.049

Therefore 15.049 is subtracted from 17.1 to get 15.049

### Question: 9

By how much should 34.79 be increased to get 70.15?

### Solution:

34.79 + x = 70.15

x = 70.15 – 34.79

x = 35.36

Therefore 35.36 is increased to 70.15

### Question: 10

By how much should 59.71 be decreased to get 34.58?

### Solution:

59.71 – x = 34.58

59.71 – 34.58 = x

x = 25.13

Therefore 25.13 is decreased to get 34.58

All Chapter RD Sharma Solutions For Class 7 Maths

I think you got complete solutions for this chapter. If You have any queries regarding this chapter, please comment on the below section our subject teacher will answer you. We tried our best to give complete solutions so you got good marks in your exam.