Jeff+A

__A. Definitions__ - My Definitions to show you

1. __Mean__ - is an average of a set of numbers eg. 1, 2, 3, 3, 4, 5, 6 __- add all numbers together - divide it by the amount of the numbers in the set__ 1 + 2 + 3 + 3 + 4 + 5 + 6 = 24 24/7 = **3.4286** - Mean = =

2. __Median__ - the middle number of a set of numbers eg. __- match each number up - if there are 2 in the middle add them both and divide by 2 - if not the last one with no partner is the middle__ 1, 2, 3, **3**, 4, 5, 6

3. __Mode__ - a set of two or more of the same number eg. __- put the number into ascending order (1, 2, 3, 3, 4, 5, 6) - find the pairs and circle or highlight__ 1, 2, **3, 3**, 4, 5, 6

4. __Percent__ - a number that is out if 100 eg. 25/100 = **25%** 50/100 = **50%**

5. __Perfect Square__ - a number that is multiplied by itself. eg. 5 x 5 = **25** - perfect square 10 x 10 = **100** - perfect square

6. __Square Root__ - a number of which a given number is the same eg. 6 and 6 = 36 - square root of **6** 3 and 3 = 9 - square root of **9**

7. __Ratio__ - Relation in a number between two similar things eg. __- leave the numerator and put it in A__ __- subtract denominator to numerator to get B__ __- A : B__ 23/50 - 23 : ? 50 - 23 = 27 23 : ? = 27
 * 23 : 27**

B. Questions - Try your best and answer these questions..

__Mean, Median, Mode__

1. Find the mean, median, and the mode: 8, 7, 9, 2, 1, 1, 3, 4 1 1 2 3 4 7 8 9

Mean - 35 /8 = 4.375

Median - 4

Mode - 1

Solution

__Square Roots__

2. What is the square root of 35? (No Calculators!)

5

Solution

__Percents__

3. Is taking 10% off a given item and then an additional 40% off the reduced price the same as taking 50% off the original price? Why or why not.

10% + 40% = 50%

Solution

__Ratio Porportion__

4.A child can run 5 blocks in 2 minutes. How long does it take the child run 8 blocks, at the same speed?
 * Use a fractions to solve this*

5. Jacob has a record of winning 2 boxing matches for every 5 he loses. If he had 49 matches during the last year, how many did he win?
 * Use a ratio table to solve this on (**Part | Total or X | K | Y chart**)*

Solution