May 2020

Class 6 – Mathematics Chapter – Rational Numbers : Exercise 9.1 Question: 1.List five rational numbers between: (i) –1 and 0 (ii) –2 and –1 (iii) -4⁄5 and -2⁄3 (iv) -1⁄2 and 2⁄3 Answer : (i) –1 and 0 Let…

Class 6 – Mathematics Chapter – Comparing Quantities : Exercise 8.3 Question: 1.Tell what is the profit or loss in the following transactions. Also find profit percent or loss percent in each case. (a) Gardening shears bought for Rs. 250…

Class 6 – Mathematics Chapter – Comparing Quantities : Exercise 8.2 Question: 1.Convert the given fractional numbers to percent: (a) 1⁄8 (b) 5⁄4 (c) 3⁄40 (d) 2⁄7 Answer : (a) 1⁄8 = 1⁄8 × 100% =25⁄2% = 12.5% (b) 5⁄4…

Class 6 – Mathematics Chapter – Comparing Quantities : Exercise 8.1 Question: 1. Find the ratio of: (a) Rs. 5 to 50 paise (b) 15 kg to 210 g (c) 9 m to 27 cm (d) 30 days to 36…

Class 6 – Mathematics Chapter – Congruence of Triangles : Exercise 7.2 Question: 1.Which congruence criterion do you use in the following? (a) Given: AC = DF, AB = DE, BC = EF So ΔABC ≅ ΔDEF (b) Given: RP…

Class 6 – Mathematics Chapter – Congruence of Triangles : Exercise 7.1 Question: 1.Complete the following statements: Two line segments are congruent if _______________. Among two congruent angles, one has a measure of 70o, the measure of other angle is…

Class 6 – Mathematics Chapter – Triangles and its Properties : Exercise 6.5 Question : 1.PQR is a triangle, right angled at P. If PQ = 10 cm and PR = 24 cm, find QR. Answer : Given: PQ =…

Class 6 – Mathematics Chapter – Triangles and its Properties : Exercise 6.4 Question: 1.Is it possible to have a triangle with the following sides? 2 cm, 3 cm, 5 cm 3 cm, 6 cm, 7 cm 6 cm, 3…

Class 6 – Mathematics Chapter – Triangles and its Properties : Exercise 6.3 Question: 1.Find the value of unknown 𝓍 in the following diagrams: Answer : (i) In ΔABC, ∠BAC + ∠ACB + ∠ABC = 180o [By angle sum property…

Class 6 – Mathematics Chapter – Triangles and its Properties : Exercise 6.2 Question: 1.Find the value of the unknown exterior angle 𝓍 in the following diagrams: Answer : Since, Exterior angle = Sum of interior opposite angles, therefore 𝓍…

Class 6 – Mathematics Chapter – Triangles and its Properties : Exercise 6.1 1.In ∆PQR, D is the mid-point of QR. PMis _______________ PD is ________________ Is QM = MR ? Answer : Given: QD = DR ∴PMis altitude. PD…

Class 6 – Mathematics Chapter – Lines and Angles : Exercise 5.2 Question: 1.State the property that is used in each of the following statements: If a‖b, then ∠1 = ∠5. If ∠4 = ∠6, then a‖b. If ∠4 +…