**Learning Target:** Use scientific notation to write very large numbers.

**Handouts:** Very Large Numbers WS (Turn in: Wed, 1/17)

Today, we looked at scientific notation. Numbers in science are often very large. For example, the mass of the earth is 5,970,000,000,000,000,000,000,000 kg. Big numbers like this are overwhelming and too time consuming to write out, so there is a shorthand way to write them: 5.97 x 10^{24} kg. This is called scientific notation. Here are the notes that we wrote:

To write a number in scientific notation, take the digits on the left side until all that are left are zeros. Next, put the decimal after the first digit. Finally, multiply the number by the power of ten required to move the decimal from its original spot to where it needs to be now.

When given a number in scientific notation, take the first number and move the decimal over as many times as the power of ten. The common misconception with kids is that you just “attach zeros” on the end based on the power of ten. This is not the case! We are moving the decimal based on the power of ten!

Your homework is to finish #1-12.