post assesment-exponents-grade8

Post-Assessment Grade -8 © 2006 1 -2010 tutorco.com 2 marks for each Question Exponents 1. 3 x 3 x 3 can be written in exponential form as : a) 27 b) 3*3 c) 33 d) 3(3) 2. Evaluate : (28)3 x (28)7 a) (28)10 b) (28)4 c) (28)21 d) (784)21 Post-Assessment Grade -8 © 2006 2 -2010 tutorco.com 3. Evaluate : (-3)3 a) -27 b) 9 c) 27 d) -9 4. Evaluate : (0.3)2 a) 90.0 b) 9.0 c) 0.9 d) 0.09 Post-Assessment Grade -8 © 2006 3 -2010 tutorco.com 5. Scientific notation of 653.7 is : a) 6.537x10-2 b) 6537.0x10-1 c) 6.537x102 d) 65370x10-2