Important Questions: Fractions and Decimals - Class 7 MCQ

where W is the whole number, N is the numerator and D is the denominator. So, 

To find the sum of  Find the L.C.M. of the denominators and then add them. L.C.M. of 4, 5 and 6 is 60. 

A proper fraction is a fraction where the numerator is smaller than the denominator. 21/23 

Let's denote:

• Total number of pages in the book as x

Understanding the problem:

• Guru reads 3/5 of the book.
• Remaining pages = 80

Setting up the equation:

• If Guru reads 3/5 of the book, then he has 2/5 of the book left to read.
• We know that 2/5 of the book is equal to 80 pages.

So, we can write the equation:

• (2/5) * x = 80

Solving the equation:

To find x, we can multiply both sides of the equation by 5/2:

• x = 80 * (5/2)
• x = 40 * 5
• x = 200

Therefore, the total number of pages in the book is 200.

• Divide 49 by 7.
• 49 litres divided by 7 equals 7 litres.

Let the number of matches lost hex. The number of matches won = x+4.
Total matches played  = x+x+4  
We have,  x+4 = 3/5 (2x+4) ⇒ x = 8 
∴  Total matches played = 20

The product of a fraction and its reciprocal is always 1.

In the case of a whole number, think of it as having a denominator of 1: The reciprocal of 5 is 1/5.

multiplying 5 and 1/5 gives 1.

Every number has a reciprocal except for 0.

Correct answer is C. 5/27
21/27 + 5/27 = 26/27

8/11   to make numerator 40 multiply , numerator and denominator by 5
8x5 = 40  11 x5 = 55
so 40/55

A unit fraction is a positive fraction with one as its numerator,

P/q = s/t ⇒ pt = sq (By cross multiplication.)

(i) change mix fraction into normal fraction 
(ii) send 3 on LHS
(iii)  remember  sign would change
(iv) take LCM

12/30 = 2/5 is the required lowest form.
dividing numerartor and denominator by 6