Net Explanations

ML Aggarwal CBSE Solutions Class 8 Math 2nd Chapter Exponents and Powers Exercise 2.2 (1) (i) 0.0000000000085 = 85×10/1000000000000 = 8.5×10-13 (ii) 0.000000000000942 = 9.42×102/1000000000000000 = 9.42×10-13 (iii) 6020000000000000 = 6.02×102×1013 = 6.02×1015 (iv) 0.00000000837 = 8.37×102/100000000000 = 8.37×10-9 (2) (i) 3.02×10-6 = 302/1000000×102 = 302/108= 0.00000302 (ii) 1.0007×1011 = 1007/10-11×103 = 1007/10-8 = 100700000000 […]

ML Aggarwal CBSE Solutions Class 8 Math 2nd Chapter Exponents and Powers Exercise 2.1 (1) (i) (3/5)-2 = 1/(3/5)2 = (5/3)2 = 5×5/3×3 = 25/9 (ii) (-3)-3 = 1/(-3)3 = (1/-3)3 = 1x1x1/-3x-3x-3 = 1/-27 (2) (i) [(2)-1+ (4)-1+ (3)-1]-1 = [1/2 + 1/4 + 1/3]-1 = [6+3+4/12]-1 = [13/12]-1 = 1/(13/12)1 = 12/13 Ans. […]

ML Aggarwal CBSE Solutions Class 8 Math 4th Chapter Cubes and Cube Roots Exercise 4.1 (5) (i) Volume of cuboid = 3 x 3 x 5 = 45 cm3 Therefore It is not a perfect cube. We need grouping triplet to form a cube The perfect cuboid should be = (3 x 3 x5) x […]

ML Aggarwal CBSE Solutions Class 8 Math 3rd Chapter Squares and Square Roots Exercise 3.2 (1) 237, 353, 247, 478, 378 (2) (i) 1 (ii) 2 (iii) 9 (iv) 3 (v) 4 (vi) 5 (vii) 7 (viii) 8 (ix) 0 (x) 6 (3) (i) 4567 – unit digit of this num is 7 ∴ It […]