Ncert Class 8 Math Chapter 5 Exercise 5.4 Question 1. Find the square root of each of the following numbers by Division method. (i) 2304 (ii) 4489 (iii) 3481 (iv) 529 (v) 3249 (vi) 1369 (vii) 5776 (viii) 7921 (ix) 576 (x) 1024 (xi) 3136 (xii) 900 Solution: Ncert Class 8 Math Chapter 5 Exercise
Ncert Class 8 Chapter 5 Exercise 5.1 Question 1. What will be the unit digit of the squares of the following numbers? (i) 81 (ii) 272 (iii) 799 (iv) 3853 (v) 1234 (vi) 20387 (vii) 52698 (viii) 99880 (ix) 12796 (x) 55555 Solution: (i) Unit digit of 81² = 1 (ii) Unit digit of 272²
Class 8 Maths Chapter 6 Ex 6.2 Question 1. Find the square of the following numbers. (i) 32 (ii) 35 (iii) 86 (iv) 93 (v) 71 (vi) 46 Solution: (i) 32 = 30 + 2 (32)² = (30 + 2)² = 30(30 + 2) + 2(30 + 2) = 30² + 30 × 2 +
Class 8 Maths Chapter 6 Ex 6.2 Question 1. Find the cube root of each of the following numbers by prime factorisation method. (i) 64 (ii) 512 (iii) 10648 (iv) 27000 (v) 15625 (vi) 13824 (vii) 110592 (viii) 46656 (ix) 175616 (x) 91125 Solution: Question 2. State True or False. (i) Cube of an odd
Ncert Class 8 Chapter 6 Exercise 6.1 Ncert Class 8 Chapter 6 Exercise 6.1 Question 1. निम्नलिखित में से कौन सी संख्याएँ पूर्ण घन नहीं हैं? (i) 216 (ii) 128 (iii) 1000 (iv) 100 (v) 46656 Solution: (i) 216 = 2 × 2 × 2 × 3 × 3 × 3 Thus, 216 is a perfect cube. (ii) 128
Ncert Class 8 Math Chapter 7 Exercise 7.3 प्रश्न 1. किसी स्थान की जनसंख्या 2003 में 5% वार्षिक दर से बढ़कर 54,000 हो गई। (i) वर्ष 2001 में जनसंख्या ज्ञात कीजिए। (ii) वर्ष 2005 में इसकी जनसंख्या क्या होगी? हल: (i) दिया गया है कि वर्ष 2003 में जनसंख्या = 54,000 54,000 = (Population in
Ncert Class 8 math Chapter 7 Exercise 7.2 Question 1. During a sale, a shop offered a discount of 10% on the marked prices of all the items. What would a customer have to pay for a pair of jeans marked at ₹ 1450 and two shirts marked at ₹ 850 each? Solution:
Ncert class 8 mathChapter 7 Exercise 7.1 Question 1. (a) एक साइकिल की 15 km प्रति घंटे की गति का एक स्कूटर की 30 km प्रति घंटे की गति से। (b) 5 m का 10 km से (c) 50 पैसे का ₹ 5 से हल: Solution: (a) साइकिल की गति : स्कूटर की गति =
Class 8 Maths Chapter 13 Ex 13.2 Question 1. Draw the graphs for the following tables of values, with suitable scales on the axes. (a) Cost of apples (b) Distance travelled by car. (i) How much distance did the car cover during the period 7:30 am to 8 am? (ii) What was the time when
Class 8 Maths Chapter 12 Exercise 12.3 Question 1. Carry out the following divisions. (i) 28×4 ÷ 56x (ii) -36y³ ÷ 9y² (iii) 66pq²r³ ÷ 11qr² (iv) 34x³y³z³ ÷ 51xy²z³ (v) 12a8b8 ÷ (-6a6b4) Solution: Question 2. Divide the following polynomial by the given monomial. (i) (5x² – 6x) ÷ 3x (ii) (3y8 – 4y6 + 5y4) ÷ y4
