Answer:
Scientific notation 1 .263 × 10³.
Step-by-step explanation:
Given : 1,263
To find : Select the correct scientific notation form of this numeral.
Solution : We have given 1,263
Scientific notation form : scientific notation use a number indicate the powers of 10.
We need to put the decimal after one digit.
Example : 6755 = 6.755* 10³
So, We can write it 1,263 as 1 .263 × 10³.
Therefore, scientific notation 1 .263 × 10³.