841Mary+L

Hi **Mom** and **Rodrigo** I have some math questions for you.


 * Mean**, **Median** and **Mode**

1. **Mean**: add up all the numbers and divide by how many pieces of **data**.
 * Median**: find the middle number
 * Mode**: is the most common number
 * Numerical Order:** when you put the numbers in oder like this: 1, 2, 3, 4 or like this: 4, 3, 2, 1


 * Data**: 8, 7, 6, 9, 10, 8, 5

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2. **Perfect Square Definition**: its a whole number


 * Square Root Definition**: its a number times itself

With out using a calculator, find the square root of 45.

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3. **Percent Discount Question & Solution

Example**: $100.00 - 15% $100.00 -25% $85.00 - 10% $75.00 $75.00

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?

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4. To solve **proportion** questions you can use many different methods. The three that you can use in these questions are: **Part over Total**, **Ratio Table (chart)**, or the **X K Y** chart.

To use the **Part over Total** method all you have to do is put the part of the question on the top and the part you are trying to solve or the total on the bottom. Then solve it by multiplying or dividing a number and repeating the same number on the top and bottom.

To use a **Ratio Table** method make a t-chart and put on the right side as the part and the left as the total. Then put all the parts of the question on the part and the part you are trying to solve or the total under the total. Multiply the parts by the same number and multiply the totals by the same number the parts multiplied by.

To use the **X K Y** method make a chart with x in one column and k in the next and y in the last. Compare the numerator with the other numerator. In the k section put how much you multiplied to get the other numerator. Then, depending on which number is missing, multiply or divide that number by k.

So now that you know what i'm talking about here are some questions that you have to answer.

A) A child can run 5 blocks in 2 minutes. How long does it take the child to run 8 blocks, at the same speed?
 * Questions**:

B) Jacob has a winning 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 an X K Y chart to solve this question.

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Some of the math work i did this term can be shown in my [|scribe post] or my [|growing post].