To multiply numbers in standard form, we first multiply the numbers and then simplify them to standard form
To find the product of
21 and 6.3 × [tex] 10^{-4} [/tex]
We shall first multiply
21 & 6.3
We get 21 × 6.3 = 132.3
Now converting this to a standard form we get
1.323 × [tex] 10^2 [/tex]
Product of 21 & 6.3 ×[tex] 10^{-4} [/tex]
= 1.323 × [tex] 10^2 [/tex] × [tex] 10^{-4} [/tex]
=1.323 × [tex] 10^{-2} [/tex]
Option C) is the right answer
