Question

WORK OUT (8*10^-3)*(2*10^-4)

Answer 1

(8 x 10^-3) x (2 x 10^-4)

10^-3 = 1/10^3, which is equal to 1/1000

10^-4 = 1/10^4, which is equal to 1/10000

8 x 1/1000 = 8/1000

2 x 1/10000 = 2/10000

(I’m turning these into decimals because it’s easier lol)

0.008 x 0.0002 = 0.0000016

In scientific notation, it is 16 x 10^-7

Hope this helped!

Answer 2

-First we have to work out what’s in parenthesis.
(8*10^-3)=(8*0.001)=0.008

-This is for the second parenthesis
(2*10^-4)=(2*0.0001)=0.0002

-Now we multiply them together

ANSWER: 0.0000016