# Lesson 1 — Activity 3: Writing Numbers Using Powers of 10 and Scientific Notation

#### Below is another look at a number and its place values. #### You have to multiply it six times. Using powers of 10, you can write 1,000,000 as #### Take a look at this chart to see how different values are written as powers of 10. #### There is a catch. Not every large or small number is a multiple of 10. This means we have to use another method to write them out a different way. This is called scientific notation. #### 3.45 x 102

##### What about 8,975,000? Follow the same steps: First write it as #### 8,975,000. (Remember that in all whole numbers, the decimal point is to the right of the last digit. We do not place it unless it is needed.) Then move the decimal point to the LEFT until there is only one number to the left of the decimal point: #### 8,975,000. #### 8,975,00.0 #### 8,9075,0.00 #### 8,975.000 #### 897.5000 #### 89.75000 #### 8.975000 Next, COUNT the number of times you moved the decimal place to the LEFT (six times in this example). You would write 8 ,975,000 in scientific notation as: #### 8.975 x 106