Question

Revision _ CH4 Mathematics Std VII
Q.1Make equations for given statements :
(a) 4 less from thrice a number m is 14.
(b) A number x divided by 4 gives 3.
(c) 7 less than a number x is 4.
(d) Four fifths of a number. is greater than three fourth of the number by 4.
(e) x exceeds 3 by 7
Q. 2 Solve the equations :
3(x−1)+7=11
(b)14= −8 10
7
(−3) 5
− 2 = −1
(e) −1=0 (f) −7=3 34
(c)
20−(2x−5)=25
(−7)
3z+11 = 41
4(x+1)=16 (i) 2 + 1 = 7 44
(a)
(d)
(g) (h)
(j) 4(x+1) =4
Q. 4 If a number is tripled & the result is increased by 5, we get 50. Find the number.
Q. 3 The length of a rectangle is three times its width. It the perimeter of the rectangle is 96m,
find the length and breadth of the rectangle.
Q. 5 Fill in the blanks :
(a) The value of the variable which makes the equations a true statement is called the____of the
equation.
(b) Any term of an equation may be taken from one side to the other with a change in its sign.
This process is called______________.
(c) An_______is a statement of equality which contains one or more unknown variables.
(d) Without changing the equality, we may_____the same quantity to both side of the equation.
Q. 6 If one side of a square is represented by 18x – 20 and the adjacent side is represented by
42 – 13x, find the length of the side of the square.
Q. 7 – 2(x + 3) = 10 Q. 8
In a class of 60 students, the number of girls is one third the number of boys. Find the
number of girls and boys in the class.

Answer 1

Step-by-step explanation:

Q 1.a) 3m - 4 = 14

b) x/ 4 = 3

c) x - 7 = 4

d) 4/ 5 of x - 3/ 4 of x = 4

e) x = 3 + 7

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