841James+C

**1. Mean, Median, and Mode**

 * Mean:** The average of all numbers in the set.
 * Median:** The number in the middle of the set.
 * Mode:** The number that recurs most often.
 * ARRANGE YOUR NUMBERS IN NUMERICAL ORDER.**
 * To calculate the mean:** Add up all your numbers and divide the sum by how many numbers are in the set.
 * To calculate the median:** The median is the number in the middle of the set. If there are two middle numbers, add them together and divide by two.
 * To calculate the mode:** To calculate the mode, just look for the number(s) that shows up most often.


 * Now you give it a try. Here's a set of numbers to work with0:** **15, 19, 37, 6, 21, 4**

//My Answer//

Perfect Square:** A perfect square is a number that is the square of a whole number. EXAMPLE: 9, because 3 is a whole number: 3x3 is 3 squared, which equals 9
 * 2. Square Roots
 * This is a perfect square chart. It might help:**
 * Factors || Exponents || Perfect Square ||
 * 1x1 || 1**²** || 1 ||
 * 2x2 || 2**²** || 4 ||
 * 3x3 || 3**²** || 9 ||
 * 4x4 || 4**²** || 16 ||
 * 5x5 || 5**²** || 25 ||
 * 6x6 || 6**²** || 36 ||
 * 7x7 || 7**²** || 49 ||
 * 8x8 || 8**²** || 64 ||
 * 9x9 || 9**²** || 81 ||
 * 10x10 || 10**²** || 100 ||
 * 11x11 || 11**²** || 121 ||
 * 12x12 || 12**²** || 144 ||
 * 13x13 || 13**²** || 169 ||
 * 14x14 || 14**²** || 196 ||
 * 15x15 || 15**²** || 225 ||

EXAMPLE: 5 is a square root of 25, because __**5**__x__**5**__ = 25
 * Square Root:** One of two equal factors of a given number.


 * Here is a square root question. What is the square root of 81?**

//My Answer//

A percent is a fraction in which the denominator is 100. For example, 0.12 or 12/100 is equal to 12%. Percent comes from the French words //Per//, meaning,uh, per... and //Cent//, meaning 100. So basically percent means //per hundred.//
 * 3. Percent**


 * Here's a question for you to attempt:** **Is taking 15% off a given item and then an additional 10% off the reduced price the same as taking 25% off the original price? Why or why not?**

//My Answer//

There are two ways we have done ratio & proportion questions. The first was using equivalent fractions.This is how they are used: IF your question was "If you drove 90 kilometres in 30 minutes, how far could you drive in one minute?", you would answer it like **[|this example]** shows.
 * 4. Ratio and Proportion - Equivalent Fractions**


 * Here is an equivalent fraction question for you to solve: If you bought 6 bananas for $2.00, how much does one banana cost?**

//My Answer//

Another way we did ratio and proportion was by using a ratio table. It's basically a t-chart with **part** for one side, and **whole** for the other: You answer the question by placing the different parts of the question into different sides of the ratio table, like this: ... and so on and so forth. You divide with a ratio table. You see the three and the fifteen on the top row? You divide the three by itself, and the 15 by three, and you get the middle line, 1 and 5. You can also multiply. Once you know the value of one unit of whatever it is, you can multiply to find out what other multiples will be, like on the bottom line. We multiplied 1 by 6, and 5 by 6. This gives us 6 and 30.
 * 5. Ratio and Proportion - Ratio Tables**
 * __PART__** **|** __**TOTAL**__
 * 3** **|** **15**
 * 1 | 5**
 * 6 | 30**


 * Here is a question for you to solve using a ratio table: If you ate 5 kernels of popcorn for every minute of a movie, how many kernels will you have eaten by the end of an hour-and-a-half movie?**

//My Answer//