Question

Find (2 × 10^7) + (3 × 10^4).

A) 2.003 × 10^4
B) 2.003 × 10^7
C) 2.03 × 10^4
D) 2.03 × 10^7

Answer 1

( 2 x 10^7) + ( 3 x 10 ^4)

you can change each of them back to the normal form

i,e 2 x 10^7 = 20000000

3 x 10 ^4 = 30000

then add, i.e 20,000,000 + 30,000 = 20,030,000

convert back to standard form

which is 2.003 x 10^7

Explanation: