## Thursday, December 1, 2011

### Math for Thursday, December 1, 2011

It’s time to start a new unit!  Unit four is all about decimals. You will learn how large numbers can be represented using decimals (Ex.  Sidney Crosby earns about 8.75 million dollars per year) and how decimals can be used to represent parts of whole numbers (Ex.  \$8.64 is 8 whole dollars and 64 hundredths of a dollar – or cents).

Tip:  What I would suggest if you have trouble with decimals is that you think of the decimal you are looking at as if it was money.  If I owed you 8.87 cents, you wouldn’t let me give you just \$5.95 would you?

Take some time to consider the unit introduction on pages 112 and 113.  Check out the Learning Goals on the bottom left of the page.  Make sure you understand what each expectation means and the language used.  The information on page 113 might be more familiar to you if you think of computer memory.

### Memory (approximate)

1 kW = 1000 Watts 1 kb (kilobyte) = 1000 bytes
1 MW = 1 000 000 Watts 1 Mb (megabyte) = 1 000 000 bytes
1 GW = 1 000 000 000 Watts 1 Gb (gigabyte) = 1 000 000 000 bytes
1 Tb (terabyte) = 1 000 000 000 000 bytes

Pre-assessment:  Try this short quiz to see how much you already know about decimals.