NCERT Class 7 Mathematics Solutions: Chapter 4 –Simple Equations Exercise 4.4 Part 1
Get top class preparation for IEO Class-7 right from your home: fully solved questions with step-by-step explanation- practice your way to success.
1. Set up equations and solve them to find the unknown numbers in the following cases:
(a) Add to eight times a number; you get .
(b) One-fifth of a number minus gives .
(c) If I take three-fourth of a number and add to it, I get .
(d) When I subtracted from twice a number, the result was .
(e) Munna subtracts thrice the number of notebooks he has from , he finds the result to be .
(f) Ibenhal thinks of a number. If she adds to it divides the sum by , she will get .
(g) Answer thinks of a number. If he takes away from of the number, the result is .
Answer:
(a) Consider the number be
times of this number
Dividing both sides by
(b) Consider the number be
One-fifth of this number
(c) Consider the number be
Three-fourth of this number
Multiplying both sides by
Dividing both sides by
(d) Consider the number be
Twice of this number
(e) Consider the number of books be
Thrice the number of books
Dividing both sides by
(f) Consider the number be .
Multiplying both sides by
(g) Consider the number be
of this number
Multiplying both sides by
Diving both sides by