Ncert -Class 7- maths -worksheet – Rational Numbers

1. Find three rational numbers between 1/2 and -1/2

2. Divide the sum of 65/12 and 8/3 by their difference

3. By what rational number should -8/39 be multiplied to obtain 5/26

4. Simplify : $$\frac{-4}{5}\times \frac{3}{7}\times \frac{15}{16}\times (\frac{-14}{9})$$

5. The sum of the rational numbers -5/16 and 7/12 is

6. what number should be added to 7/12 to get 4/15

7. Which of the rational numbers $$\frac{-5}{16}, \frac{-13}{24}, \frac{3}{-4},\frac{7}{-12}$$

8. Rewrite the rational number 44/-72 in the simplest form

9. Write the next rational number in the pattern $$\frac{-1}{4}, \frac{-2}{8}, \frac{-3}{12}…$$

10. Find x such that -3/x and x/-24 are equivalent rational numbers

11. A drum of kerosene oil is 3/4 full. When 15liter of oil is drawn from it , it is 7/12 full. Find the capacity of the drum

12. The cost of 2(1/2)m of cloth is Rs. 78 (3/4),, then find out the cost of cloth of 3 (1/3)m ?

13. By what rational number should -8/39 be multiplied to obtain 5/26

14. Find three rational numbers between 1/2 and -1/2

15. If 24 pairs of trouser of equal size can be prepared with 54m of cloth, what length
of cloth is required for each pair of trouser ?

16. By taking x= -5/3 , y = 2/7, and z =-1/4 , Verify that $$x\div (y-z)\neq (x\div y)- (x\div z)$$

17. A car is moving at an average speed of 54(4/5)km/h .how much distance will it cover in 7(1/2) hrs

18. Find the simple interest that Ram has to pay if he borrows Rs 500 for a period of 5 yrs at the rate of 5% p.a.
a) Rs 200
b) Rs 150
c) Rs 100
d) Rs 125

19. Find the amount to be paid at the end of 3 yrs if the principal amount is Rs 1,200 at 10%p.a.
a) Rs 1,300
b) Rs 1,560
c) Rs 1,498
d) Rs 1360

20. S.P of a toy is Rs 540. If the profit made by the shopkeeper is 20%, find the C.P of
the toy.
a) Rs 500
b) Rs 450
c) Rs 520
d) Rs 600

21. The cost of a flower vase is Rs 120. If the shopkeeper sells it at a loss of 10%, find the Selling price
a) Rs 110
b) Rs 108
c) Rs 112
d) Rs 132