Question

Write 12,400,000 in scientific notation.

A.1.24*10^[7]
B.1.24*10^[4]
C.1.24*10^[1]
D.12.4*10^[7]

Answer 1

12,400,000 = 1.24 x 10^7

Answer is A.1.24*10^[7]

Answer 2

A )
`1.24* 10^(7)`.

Explanation:

Given : 12,400,000 .

To find : Write 12,400,000 in scientific notation.

Solution : We have given 12,400,000 .

Steps to write in scientific notation :

Step 1 : If a number has n digit we move decimal point ( n-1) place to left and to balance , multiply by
`10^(n-1)`.

We can see there are n = 8 in 12,400,000 .

So, we move decimal point 7 place to the left .

Then
`1.24* 10^(7)`.

Therefore,
`1.24* 10^(7)`.