We will often use our calculator to evaluate expressions with scientific notation. However, knowing our index laws we can manipulate calculations that are relatively straightforward or estimate the size of answers for more complex calculations.
Use your calculator to find the value of 82.97\times 7.1\times 10^4.
Express your answer using scientific notation.
Use power laws to simplify 4\times 10^{-2}\times 9\times 10^9.
Express your answer using scientific notation.
A light year is defined as the distance that light can travel in one year. It is measured to be 9\,460\,730\,000\,000\,000 metres
Express a light year in metres using scientific notation.
Express a light year in kilometres using scientific notation.
Express a light year in centimetres using scientific notation.
The star Tindalos has a mass of 7.3\times 10^{50} kg and the star Cykranosh has a mass of 15.33\times 10^{53} kg.
By what factor is Cykranosh larger than Tindalos?
Express your answer as an integer using scientific notation.
We will often use our calculator to evaluate expressions with scientific notation. However, knowing our index laws can help us simplify or estimate our calculations.
Calculators will often display numbers in scientific notation but the format and button for entering numbers in scientific notation will vary between models.