1. The document outlines assignments, tests, and lesson material for a math class. It includes assignments due on January 15th and a test scheduled for January 21st. 2. Lesson 55 covers finding the average of a set of numbers by adding them up and dividing by the number of items. It also provides a process for finding a missing number if the average is given. 3. Examples of average problems are presented on pages 389 without showing the work or solutions.

1. lesson 55.notebook
Assignment:
1-->Set 55 (odds) - Due Tomorrow [1/15]
2-->Test signed??
3-->Test #8 - Tuesday [1/21]
January 14, 2014

2. lesson 55.notebook
January 14, 2014
Lesson 55 Warm-Up:
1)
Simplify:
3 5/10 + (9 1/2 - 6 2/3)
2)
Simplify:
112 + 13 - 121
3)
Simplify:
26
22
4)
Solve:
24
r
36
27
5 cm
3 cm
8 cm
5)
6 cm
Find the perimeter:
5 cm
9 cm

3. lesson 55.notebook
January 14, 2014
Lesson 55:
*FYI...To find the average of a set of numbers-->
add them up and divide by the number of numbers!
***If you are given what the average is and have to find one of the
missing numbers in the set of data...you have to work backwards...
--ADD the numbers you HAVE been given...
--MULTIPLY the average by how many numbers in the set of data...
--SUBTRACT the sum from the product!

4. lesson 55.notebook
Lesson 55 Examples:
pg. 389
A)
B)
January 14, 2014

5. lesson 55.notebook
C)
D)
January 14, 2014

6. lesson 55.notebook
E)
F)
January 14, 2014

7. lesson 55.notebook
G)
January 14, 2014