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Table of contents Try These(Page No. 132) Q1: Observe the following tables and find if x and y are directly proportional. i.e. Each ratio is the […]

Exercise 10.1Q1: Evaluate (i) 3-2Sol: (i) To evaluate an expression of the form a-n,where a is a base and n is a positive exponent, we use the […]

Exercise 9.1 Q1. The shape of the top surface of a table is a trapezium. Find its area if its parallel sides are 1 m and […]

Exercise 8.3 Q1. Carry out the multiplication of the expressions in each of the following pairs.(i) 4p, q + r Ans: (4p) × (q  +  r) = (4p × […]

Exercise 8.1 Q1. Add the following:(i) ab – bc, bc – ca, ca – abAns: (ab – bc) + (bc – ca) + (ca-ab)= ab – bc […]

Try These Questions (Page No. 81) Q1:In a primary school, the parents were asked about the number of hours they spend per day in helping their […]

Exercise 6.2 Q1:  Find the cube root of each of the following numbers by prime factorisation method.  (i)  64 (ii)  512 (iii) 10648 (iv) 27000 (v) […]

Q1: Which of the following numbers are not perfect cubes?(i) 216 (ii) 128 (iii) 1000(iv) 100 (v) 46656 Sol:  Q2: Find the smallest number by which each of the following numbers […]

Exercise 5.1 Q1. What will be the unit digit of the squares of the following numbers?(i) 81 (ii) 272(iii) 799(iv) 3853(v) 1234(vi) 26387(vii) 52698(viii) 99880(ix) 12796(x) 55555Ans: (i) Since, […]