POWERS AND EXPONENTS

POWERS AND EXPONENTS

GRADE 8 (18/2/21)

LESSON RECAP

THIS IS THE KEY CONCEPT OF WRITING IN SCIENTIFIC NOTATION

LESSON RECAP

INSTRUCTIONS:

KEEPING THE CORE CONCEPTS IN MIND PLEASE ATTEMPT THE FOLLOWING QUESTIONS

Multiple Choice

EVALUATE

 $3^{-2}$  

• 9

• 1/9
  

• -9

• -1/9

Multiple Choice

SIMPLIFY AND EXPRESS THE RESULT IN POWER NOTATION WITH POSITIVE EXPONENTS

 $\left(3^{-7}\div3^{-10}\right)\times3^{-5}$  

•  $3^{-2}$  

•  $\frac{1}{3^2}$  

•  $\frac{1}{9}$  

•  $\frac{1}{3^8}$  

Multiple Choice

FIND THE VALUE OF $\left(3^{-1}+4^{-1}+5^{-1}\right)^0$  

• 12

• 0

• 1

• 47/60

Multiple Choice

 $\left(\frac{1}{2}\right)^{-2}\ +\left(\frac{1}{3}\right)^{-2}\ +\left(\frac{1}{4}\right)^{-2}$  

FIND THE VALUE OF

• 29

• 32

• 16

• 20