Question 3

You may use a calculator.

Question 3a to c - multiple choice question

a	When simplified and expressed in scientific notation, (2.1 × 10\(^2\))\(^4\) is:
	19.4481 × 10\(^2\)	19.4481 × 10\(^8\)	1.94481 × 10\(^9\)
b	When simplified and expressed in scientific notation, (1.2 × 10\(^6\)) ÷ (4 × 10\(^7\)) is:
	0.3 × 10\(^{-1}\)	3 × 10\(^{-2}\)	3 × 10\(^0\)
c	When simplified and expressed in scientific notation, \(\dfrac{(4 × 10^5)^3}{(8 × 10^4)^2}\) is:
	0.5 × 10\(^2\)	5 × 10\(^3\)	1 × 10\(^7\)

Question 4

The distance between interconnecting lines on a silicon chip for a computer is approximately 0.000 000 04 m. In scientific notation this is:

Question 4 - multiple choice question

4 × 10\(^{-8}\)m

4 × 10\(^{-7}\)m

40 × 10\(^{-9}\)m