Respuesta :

Answer:it’s the Third one

Step-by-step explanation:

1.263 move the decimal 3 times and you get the awnser

Answer: You read scientific notation by moving the decimal that amount of spaces next the the 10

1.263 * 10^3

You move the decimal over 3 places

1.263 * 10^3 = 1263

The answer is 1.263 * 10^3

Hope this helps!