Question

Which one of these numbers are greater than 3.2×10-3

Answer 1

3.2 x 10^-3 = 0.0032 ( we have to move the decimal point 3 units to the left since the exponent of 10 is -3)

Express all the options in decimal form

2.1 x 10^-3 = 0.0021

4.2 x 10^-4 = 0.00042

5.2 x 10^-2 = 0.052

5.2 x 10^-1= 0.52

0.052 > 0.0032

0.52> 0.0032

So, correct options are:

5.2 x 10^-2

5.2 x 10^-1