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Fractions, percents and decimals |
1999-09-19 |
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Sue Farr pose la question :
My son is in 5th grade, and I can't seem to find any papers that have a simple explanation of how to convert decimals into fractions, percents into decimals, and vice-versa.
Harley Weston lui répond. |
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Magic Square |
1999-09-18 |
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Nick Grundberg pose la question :
Using the this square, fill in the squares using the numbers 1 through 9 just once to make all the sums equal in all directions, across, down, and diagonally. Then tell what the sum of the magic square equals.
Penny Nom lui répond. |
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Repeating decimals |
1999-09-18 |
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Kavoos Bybordi pose la question :
I dont know how to change a reccuring decimal to a fraction please could you tell me the method.
Penny Nom lui répond. |
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Surface area of a cone |
1999-09-18 |
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Frothy pose la question :
I don't understand how to find the surface area of a cone. The height is 12cm and the radius is 5cm.
Walter Whiteley lui répond. |
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The greatest possible difference |
1999-09-17 |
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Denea Hugunin pose la question :
Use each of the digits 1 to 5 once to make a 2 digit number and a three digit number that the greatest possible difference.
Penny Nom lui répond. |
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2 to the x and x squared |
1999-09-17 |
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John pose la question :
For what values of x is 2 to the exponent x greater than x squared?
Harely Weston lui répond. |
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Square roots without a calculator |
1999-09-14 |
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Josh Weiner pose la question :
Is there any way to find out a square root without a calculator?
Harley Weston lui répond. |
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Bob and his dad |
1999-09-14 |
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Yvette pose la question :
"Bobs dad is 27 yrs older then Bob. The sum of their ages 5 yrs ago was 45 yrs. How old is Bob now?"
Penny Nom lui répond. |
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Stem and Leaf Plot |
1999-09-14 |
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Jeanette Sovick pose la question :
My 5th grade son brought home a math paper, the title of which reads, Reading Stem-and-Leaf Plots...can you explain this so I can explain it to him...There is no book, his teacher just sent this practice sheet home for him to complete and I have no clue!
Penny Nom lui répond. |
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Six toothpicks |
1999-09-14 |
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Maddie pose la question :
The book asks: Using 6 toothpicks represent the number 17. I am studying expressions to represent a number. ex.) (2+4)4x4=96.
Penny Nom lui répond. |
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Two Jugs |
1999-09-14 |
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Kynadi Kemp pose la question :
If you have and 8 liter and a 3 liter jug and you want exactly 4 liters how do you get it if there is a water hose near by but thats all you have to get the 4 liters how do you do it ?????
Penny Nom lui répond. |
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Help with three mathematicans! |
1999-09-14 |
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Ashley Tacheira pose la question :
I am a sophomore in high school and have been assigned a research paper on over thirty mathematicians. I was able to find information on all but three. I need to know the birth and death dates and major contributions of these three mathematicians. Any suggestions on where to look would be appreciated. George Stigler, T.C. Koopmans and Thomas Guthrie are the three that I cannot seem to find.
Chris Fisher lui répond. |
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Bales of hay |
1999-09-13 |
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Ivy pose la question :
You are given 5 bales of hay. Two bales are weighed at a time, which equal the following weights:
110, 112, 113,114,115,116,117,118,120,121. What does each individual bale weigh?
Harley Weston lui répond. |
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Inductive reasoning pattern |
1999-09-13 |
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Greg Walsh pose la question :
What are the next 2 rows of the pattern? 3
13
1113
3113
2123
112213
312213
Walter Whileley lui répond. |
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Roman Numerals |
1999-09-13 |
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April pose la question :
Write MCDXCVII in arabic numbers
Penny Nom lui répond. |
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