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Archive for January 2011

Jan/11

28

Math Blog post 1/24/11

problem 4)

A company makes 5 blue cars for every 3 white cars.  If the company makes 15 white A cars in one day, how many blue cars will it make?

Step 1) The First thing I did was that I counted by 3 five times and got 15.

Step 2)Then I counted backwards by 5 three times and got 5.

Step 3)then I timed 5 withe the five I already had and got my answer 25.

I am doing problem 4 this week. A company makes 5 blue cars for every 3 white cars.  If the company makes 15 white cars in one day, how many blue cars will it make?

Step 1 I counted by five and I got 15.

Step 2 I counted the same amount of times that i did with 5 which is 5

Step 3 next i multiplied 5 x 5 which equals 25

Jan/11

28

Math Problem 1/24/11

I picked #2 for my problem. A certain map uses a scale of 1 inch equals 25 miles. How many miles are represented by 5 inches on this map? There is 3 steps to find the answer to the problem.

Step 1)  Look for your most important information in the math problem.

Step 2) Multiply 25 & 5.

Step 3) You get 125.

So the map represents 125 miles.

I also chose problem 4 which states, A company makes 5 blue cars for every 3 white cars. If the company makes 15 white cars in one day, how many blue cars will it make?

Step1) Count by 5 until you get to 15.

Step2) So the Number of times you counted to get to 15 is 3 right. So now multiply 3 & 3 and you’ll get 9.

So they would make 9 blue cars every time they make 15 white cars.

5)  The vice president of sales took a client out to lunch.  If the lunch was $44.00 and she left a 20% tip,  how much money did she spend on lunch?

Step 1) Write a proportion.  20%/100 =  N/44

Step 2) Cross Multiply.

Step 3) Divide

So she will leave $8.80 for a tip.

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I chose the last problem.  What I did First is make a proportion like this 35%\100 = n\$58.50
After, I Crossed multiplied. Can you please wait a moment I am going to multiply…..  I think it equals 104,750. After that you  divide by 100. You divide 1o4,750 by 100. Finally you subtract  your division answer by 58.50.  You save $43.75.                                                                                                                                                                          

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Today in math I learned how to solve this simple problem:

A desert area’s average rainfall is 12 inches a year. This year the area received 15 inches of rain. What percent of the average rainfall amount is 15 inches?

step 1) i multiply 12 and 15 and get 1.25

step 2) i will move the decimal point

step 3) And 125 will be my answer.

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Jan/11

13

Math Question

Question # 5 states that One Human Year Is To Equal 7 Dog Years. If John’s Dog Is 6.5 Years In Human Years, How Much Is He In Dog Years? Well to do this this problem you first multiply 7 and 6.5 years together. You will get 455. Then you add the decimal to 455 to get 45.5. So John’s dog is 45.5 dog years.

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