Chapter 9 Direct Proportion and Inverse Proportion Set 9.1
Chapter 9 Direct Proportion and Inverse Proportion Set 9.1 Question 1. If 7 kg onions cost Rs 140, how much must we pay for 12 kg onions? Solution: Let the…
Chapter 8 Algebraic Expressions and Operations on them Set 8.5
Chapter 8 Algebraic Expressions and Operations on them Set 8.5 Question 1. Simplify (3x – 11y) – (17x + 13y) and choose the right answer. (A) 7x – 12y (B)…
Chapter 8 Algebraic Expressions and Operations on them Set 8.4
Chapter 8 Algebraic Expressions and Operations on them Set 8.4 Question 1. Multiply: i. 16xy × 18xy ii. 23xy² × 4yz² iii. (12a + 17b) × 4c iv. (4x +…
Chapter 8 Algebraic Expressions and Operations on them Set 8.3
Chapter 8 Algebraic Expressions and Operations on them Set 8.3 Question 1. Subtract the second expression from the first. i. (4xy – 9z); (3xy – 16z) ii. (5x + 4y…
Chapter 8 Algebraic Expressions and Operations on them Set 8.2
Chapter 8 Algebraic Expressions and Operations on them Set 8.2 Question 1. Add: i. 9p + 16q; 13p + 2q ii. 2a + 6b + 8c; 16a + 13c +…
Chapter 8 Algebraic Expressions and Operations on them Set 8.1
Chapter 8 Algebraic Expressions and Operations on them Set 8.1 Question 1. Classify the following algebraic expressions as monomials, binomials, trinomials or polynomials. i. 7x ii. 5y – 7z iii.…
Chapter 7 Joint Bar Graph
Chapter 7 Joint Bar Graph Question 1. The number of saplings planted by schools on World Tree Day is given in the table below. Draw a joint bar graph to…
Chapter 6 Indices Set 6.5
Chapter 6 Indices Set 6.5 Question 1. Find the square root: i. 625 ii. 1225 iii. 289 iv. 4096 v. 1089 Solution: i. 625 ∴ 625 = 5 x 5…
Chapter 6 Indices Set 6.4
Chapter 6 Indices Set 6.4 Question 1. Simplify: ii. (34)-2 = 34×(-2) = 3-8 v. (65)4 = 65×4 = 620 Question 2. Write the following numbers using positive indices:
Chapter 6 Indices Set 6.3
Chapter 6 Indices Set 6.3 Question 1. Simplify: i. a6 ÷ a4 ii. m5 ÷ m8 iii. p3 ÷ p13 iv. x10 ÷ x10 Solution: i. a6 ÷ a4 =…