Exercise 1.8

## RD Sharma Class 8 Math First Chapter Rational Numbers Exercise 1.7 Solution

Exercise 1.7   1. Divide: 2. Find the value and express as a rational number in standard from: 9. Find (x+y) ÷ (x-y), if

## RD Sharma Class 8 Math First Chapter Rational Numbers Exercise 1.6 Solution

Exercise 1.6   1. Verify the property:  x⨯y = y⨯x by taking:   Solution: 2. Verify the property : x⨯(x⨯z) = (x⨯y) ⨯ z by taking:   Solution: 3. Verify the property: x⨯ ( y+z) = x⨯y+x⨯z by taking   Solution: 4. Use the distributivity  of multiplication of rational number over their addition to simplify: […]

## RD Sharma Class 8 Math First Chapter Rational Numbers Exercise 1.5 Solution

Exercise 1.5   1. Multiply 2. Multiply 3. Simplify each of the following and express the result as rational number as standard from: 4. Simplify 5. Simplify:

## RD Sharma Class 8 Math First Chapter Rational Numbers Exercise 1.4 Solution

Exercise 1.4   1. Simplify each other of the rational number and write as rational number of the form p/q : 2. Express each other of the following as rational number of the from p/q: 3. Simplify:

## RD Sharma Class 7 Math 12th Chapter Profit and Loss Exercise 12.1 Solution

Exercise 12.1   1. Given the following values, find the unknown values: (i) C.P. = Rs 1200, S.P. = Rs 1350 Profit/Loss , ? (ii) C.P. = Rs 980, S.P. = Rs 940 Profit/Loss = ? (iii) C.P. = Rs 720, S.P. ?, Profit = Rs 55.50 (iv) C.P. ? S.P. = Rs 1254, Loss […]

## RD Sharma Class 7 Math 11th Chapter Percentage Exercise 11.6 Solution

Exercise 11.6   1. Ashu had 24 pages to write. By the evening, he had completed 25% of his work. How many pages were left?   Solution: Total number of pages = 24 Number of pages completed = 25% of pages = 6 pages Therefore no of pages left = Total – Pages completed = […]

## RD Sharma Class 7 Math 11th Chapter Percentage Exercise 11.5 Solution

Exercise 11.5   1. What per cent of   Solution: (i) 24 is 6? We have, =25% Hence 24 is 6 = 25% (ii) Rs.125 is Rs.10? = 8% Hence, Rs 10 is 8% of Rs 125 (iii) 4km is 160 metres? Hence, 160 metres of 4km is 4%   (iv) Rs. 8 is 25 […]

## RD Sharma Class 7 Math 11th Chapter Percentage Exercise 11.4 Solution

Exercise 11.4   1. Find each of the following: Solution:   (i) 7% of Rs.7150 (ii) 40% of 400Kg (iii) 20% of 15.125litres (iv) 3 % of 90 km (v) 2.5% of 600metres 2. Find the number whose 12(1/2) % is 64.   Solution: Let the required number be x. Then, 3. What is the […]

## RD Sharma Class 7 Math 11th Chapter Percentage Exercise 11.3 Solution

Exercise 11.3     1. Express each of the following per cents as decimals:   Solution: (i) 12.5% (ii) 75% (iii) 128.8% (iv) 0.05% 2. Express each of the following decimals as per cent   Solution: (i) 0.004 (ii) 0.24 (iii) 0.02 (iv) 0.275 3. Write each of the following as whole numbers or mixed […]