## Monday, November 8, 2010

### April's blog post for November 8th 2010

HI EVERYONE! Today in Math class, Mr. Backe gave us a whole bunch of notes.

HERE THEY ARE:
Quiz 3 will be on:
• identifying rationals
- natural, whole, integers, rational and irrational. (All belong to set of real numbers)
• order of operations for all rationals
• converting fractions to decimals, fractions to percent and decimals to fraction AND vice versa
• solving rational # problems (to that end of 2.3 by end of the week)
• Signs, signs, everywhere signs...

In math, we follow a certain order to be able to get to the same answer. (Universally) Order is usually denoted by mathematical symbols (signs). In grade 7 you learned BEDMAS.

BEDMAS is also sometimes called PEDMAS. P means Paranthesis.

Other confusing signs
• when brackets "kiss" ( ) ( ) <-- kissing, it means to multiply.
• a bracket around an integer does not necessarily mean do me first!

• a dot in the middle of two numbers can mean multiplication or be a place holder for decimals. If the dot is in the middle of the numbers
It means multiply, it if is lower down (1.1) it is a decimal place holder.

When is a negative number negative?

a = 1
b = 2
c = 3
ALL OR SOME?

Question for tomorrow: