NCERT Solutions Class 7

Class 6 – Mathematics Chapter – Algebraic Expressions : Exercise 12.3 Question : 1.If m=2, find the value of: (i) m – 2 (ii) 3m – 5 (iii) 9 – 5m (iv) 3m2 – 2m – 7 (v) 5m2 –…

Class 6 – Mathematics Chapter – Algebraic Expressions : Exercise 12.2 Question : 1.Simplify combining like terms: 21b – 32 + 7b – 20b – z2 + 13z2 – 5z + 7z3 – 15z p – (p – q) –…

Class 6 – Mathematics Chapter – Algebraic Expressions : Exercise 12.1 Question : 1.Get the algebraic expressions in the following cases using variables, constants and arithmetic operations: Subtraction of 𝓏 from 𝓎. One-half of the sum of numbers 𝓍 and…

Class 6 – Mathematics Chapter – Perimeter and Area : Exercise 11.4 Question: 1. A garden is 90 m long and 75 m broad. A path 5 m wide is to be built outside and around it. Find the area…

Class 6 – Mathematics Chapter – Perimeter and Area : Exercise 11.3 Question : 1.Find the circumference of the circles with the following radius: (Take π = 22⁄7) (a) 14 cm (b) 28 mm (c) 21 cm Answer : (a)…

Class 6 – Mathematics Chapter – Perimeter and Area : Exercise 11.2 Question : 1.Find the area of each of the following parallelograms: Answer : We know that the area of parallelogram = base x height (a) Here base =…

Class 6 – Mathematics Chapter – Perimeter and Area : Exercise 11.1 Question : 1.The length and breadth of a rectangular piece of land are 500 m and 300 m respectively. Find: (i) Its area. (ii) The cost of the…

Class 6 – Mathematics Chapter – Practical Geometry : Exercise 10.4 Question : 1.Construct ΔABC, given 𝓂∠A = 60o,𝓂∠B = 30o and AB = 5.8 cm. Answer : To construct: ΔABC where 𝓂∠A = 60o,𝓂∠B = 30o and AB =…

Class 6 – Mathematics Chapter – Practical Geometry : Exercise 10.5 Question : 1.Construct the right angled ΔPQR, where 𝓂∠Q = 90o, QR = 8 cm and PR = 10 cm. Answer : To construct: A right angled triangle PQR…

Class 6 – Mathematics Chapter – Practical Geometry : Exercise 10.3 Question : 1.Construct ΔDEF such that DE = 5 cm, DF = 3 cm and m∠EDF = 90o. Answer : To construct: ΔDEF where DE = 5 cm, DF…

Class 6 – Mathematics Chapter – Practical Geometry : Exercise 10.1 Question : 1.Draw a line, say AB, take a point C outside it. Through 𝒞, draw a line parallel to AB using ruler and compasses only. Answer : To…

Class 6 – Mathematics Chapter – Practical Geometry : Exercise 10.2 Question : 1.Construct ΔXYZ in which XY = 4.5 cm, YZ = 5 cm and ZX = 6 cm. Answer : To construct: ΔXYZ, where XY = 4.5 cm,…