1. An assignment is due on Tuesday May 7th for Set 68 evens and there is a test for extra credit on signed numbers for Test #10 and another test on Tuesday May 7th for Test #11. 2. The warm up has 5 math problems involving circumference, scientific notation, averages, percentages, and sales tax. 3. The lesson discusses how to subtract signed numbers by adding the opposite and using addition rules and provides 8 example problems to simplify.

1. lesson 68.notebook May 03, 2013
Assignment:
1-->Set 68 (evens) - Due Tuesday (5/7)
2-->Test #10 signed for extra credit??
3-->Test #11 - Tuesday (5/7)

2. lesson 68.notebook May 03, 2013
Lesson 68 WarmUp:
Simplify.
1) What is the circumference of a circle whose radius is 4 in.?
2) Write 12 billion in scientific notation.
3) The average of 2 and 4 is 3. What is the average of the "reciprocals" of
2 and 4?
4) What number is 75% of 64?
5) What is the tax on a $7.40 item if the sales-tax rate is 8%?

3. lesson 68.notebook May 03, 2013
Lesson 68:
*FYI...to subtract signed numbers...
**ADD the opposite and use the rules for addition!

4. lesson 68.notebook May 03, 2013
Lesson 68 Examples:
Simplify.
A) (-3) - (2)
B) (-3) - (-2)
C) (3) - (2)

5. lesson 68.notebook May 03, 2013
D) (-3) - (2) - (-4)
E) (-8) + (-3) - (2)
F) (-8) - (3) + (-2)

6. lesson 68.notebook May 03, 2013
G) (-3/5) - (-1/5)
H) (-0.2) - (0.3)