Decimals RS Aggarwal ICSE Class-7th Goyal Brothers

Decimals  RS Aggarwal ICSE Class-7th Mathematics Solutions Goyal Brothers Prakashan Chapter-4. We provide step by step Solutions of Exercise / lesson-4 Decimals for ISC Class-7 RS Aggarwal Mathematics.

Our Solutions contain all type Questions with Exe-4 A, Exe-4 B,  Exe-4 C Exe-4 D , Exe-4 E,  Exe-4 F, Exe-4 G,  Exe-4 H (MCQ), Mental Maths to develop skill and confidence. Visit official Website CISCE for detail information about ICSE Board Class-7 Mathematics.

Board	ICSE
Publications	Goyal brothers Prakshan
Subject	Maths
Class	7th
Chapter-4	Decimals
Writer	RS Aggrawal
Book Name	Foundation
Topics	Solution of Exe-4 A, Exe-4 B,  Exe-4 C Exe-4 D , Exe-4 E,  Exe-4 F, Exe-4 G,  Exe-4 H (MCQ), Mental Maths
Academic Session	2021-2022

Decimals RS Aggarwal ICSE Class-7th Mathematics Solutions Goyal Brothers Prakashan Chapter-4

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–: Select Topics :–

 

Exe-4 A,

Exe-4 B,

 Exe-4 C,

Exe-4 D,

Exe-4 E,

 Exe-4 F.

Exe-4 G,

(MCQ), Exe-4 H 

Mental Maths

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Introduction: Decimal

Decimal numbers are used to represent numbers that are smaller than the unit 1. Decimal number system is also known as base 10 system since each place value is denoted by a power of 10.

A decimal number refers to a number consisting of the following two parts:
(i) Integral part (before the decimal point) (ii) Fractional Part (after the decimal point). These both are separated by a decimal separator(.) called the decimal point.
A decimal number is written as follows : Example 564.8 or 23.97.
The numbers to the left of the decimal point increase with the order of 10, while the numbers to the right of the point increase with the decrease order of 10.

Multiplication of Decimals

Multiplication of decimal numbers with whole numbers :
Multiply them as whole numbers. The product will contain the same number of digits after the decimal point as that of the decimal number.
E.g : $11.3\times 4=45.2$

Multiplication of decimals with powers of 10 :

If a decimal is multiplied by a power of 10, then the decimal point shifts to the right by the number of zeros in its power.
E.g : $45.678\times 10=456.78$(decimal point shifts by 1 place to the right) or, $45.678\times 1000=45678$ (decimal point shifts by 3 places to the right)

Multiplication of decimals with decimals :

Multiply the decimal numbers without decimal points and then give decimal point in the answer as many places same as the total number of places right to the decimal points in both numbers.

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Exercise – 4 A, Decimals RS Aggarwal ICSE Class-7th Mathematics Solutions Goyal Brothers Prakashan Chapter-4

Page 54

Question 1

convert each of the following into like decimals :

(i)……………

……………..

Question 2

write each of the following decimal into expanded form :

(i)………….

……………….

Question 3

express ………………….simple form

Question 4

convert …………………..decimal

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 RS Aggarwal Solutions ICSE Class-7th Mathematics Goyal Brothers Prakashan Chapter-4 Exercise – 4 B Decimals

Page 55

Question 1

Add :

(i) 9.67, 15.98

…………….

Question 2

subtract :

(i) 2.975 from 8.23

…………….

Question 3

………………..

………………..

……………….

Question 10:

Simplify :

(i)  67 + 13.85 – 29.904

………………..

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Goyal Brothers Prakashan RS Aggarwal Solutions ICSE Class-7th Mathematics  Chapter-4  Decimals Exercise – 4 C

Page 57-58

Question 1

multiply :

(i) 6.5 x 10

………………………

Question 2

multiply :

(i) 2.4 x 16

………………………..

Question 3

…………………..

………………….

………………….

Question 9

The cost of 1 lr. of refined oil is 124.75 Rs. What is the cost of 6.2 litres of this oil ?

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Exercise – 4 D, Goyal Brothers Prakashan RS Aggarwal Solutions ICSE Class-7th Mathematics  Chapter-4  Decimals 

Page 60

Question 1

divide :

(i) 2.8 / 10

……………… ………..

Question 2

divide :

(i) 20.79/9

…………………………..

Question 3

…………………

………………….

…………………

Question 9

How ………………….61.2 cm ?

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ICSE Class-7th Mathematics Goyal Brothers Prakashan RS Aggarwal Solutions Decimals Exercise – 4 E 

Page 62

Question 1

express each of the following as a recurring decimal :

(i) 20/3

……………….

Question 2

convert ……………………vulgar fraction

(i)…………….

…………….

Question 3

Convert each of the following into a vulgar fraction :

(i) 0.16

………………..

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Decimals Exercise – 4 F, ICSE Class-7th Mathematics Goyal Brothers Prakashan RS Aggarwal Solutions 

Page 64

Question 1

round of each of the following to the nearest whole number :

(i) 87.46

……………..

Question 2

Round off :

(i) …………….

……………………………..

Question 4:

Express 6/7 as a decimal, correct to 2 decimal places.

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Decimals ICSE Class-7th Mathematics Goyal Brothers Prakashan RS Aggarwal Solutions Exercise – 4 G

Page 68

Question 1

without actual division ………………..decimal

(i)…………..

……………..

Question 2

By actual division, express each of the following rational numbers as a terminating  decimal

(i)…………..

……………..

Question 3

……………………

…………………..

………………….

Question 5

fill in the blanks

…………………..

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Exercise – 4 H

MULTIPLE CHOICE QUESTIONS 

Page 69

choose the correct option in each of the following

Question 1

the decimal 0.55 when ……………….. is

………………..

Question 2

The fraction 31(3/8) converted to decimal is .

…………………

Question 3

………………….

……………………

…………………

Question 7

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 ICSE Class-7th Mathematics Goyal Brothers Prakashan RS Aggarwal Solutions Chapter-4 Decimals Mental Maths, 

Page 69

Question 1

Fill in the blanks………….

……………

…………….

……………..

……………..

……………..

Answer

(i) Like decimal

(ii) Three

(iii) Left

(iv) Sum

(v) Mixed recurring

Question 2

Write true or False :

…………….

……………..

……………..

……………..

……………..

Answer

(i) False

(ii) True

(iii) False

(iv) False

(v) False

 

–: End of Decimals RS Aggarwal ICSE Class-7th Solutions :–

 

Return to- RS Aggarwal Solutions for ICSE Class-7 Goyal Brothers Prakashan

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