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Fractions, percents and decimals |
1999-09-19 |
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From Sue Farr:
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.
Answered by Harley Weston. |
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Magic Square |
1999-09-18 |
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From Nick Grundberg:
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.
Answered by Penny Nom. |
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Repeating decimals |
1999-09-18 |
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From Kavoos Bybordi:
I dont know how to change a reccuring decimal to a fraction please could you tell me the method.
Answered by Penny Nom. |
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Surface area of a cone |
1999-09-18 |
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From Frothy:
I don't understand how to find the surface area of a cone. The height is 12cm and the radius is 5cm.
Answered by Walter Whiteley. |
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The greatest possible difference |
1999-09-17 |
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From Denea Hugunin:
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.
Answered by Penny Nom. |
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2 to the x and x squared |
1999-09-17 |
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From John:
For what values of x is 2 to the exponent x greater than x squared?
Answered by Harely Weston. |
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Square roots without a calculator |
1999-09-14 |
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From Josh Weiner:
Is there any way to find out a square root without a calculator?
Answered by Harley Weston. |
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Bob and his dad |
1999-09-14 |
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From Yvette:
"Bobs dad is 27 yrs older then Bob. The sum of their ages 5 yrs ago was 45 yrs. How old is Bob now?"
Answered by Penny Nom. |
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Stem and Leaf Plot |
1999-09-14 |
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From Jeanette Sovick:
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!
Answered by Penny Nom. |
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Six toothpicks |
1999-09-14 |
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From Maddie:
The book asks: Using 6 toothpicks represent the number 17. I am studying expressions to represent a number. ex.) (2+4)4x4=96.
Answered by Penny Nom. |
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Two Jugs |
1999-09-14 |
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From Kynadi Kemp:
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 ?????
Answered by Penny Nom. |
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Help with three mathematicans! |
1999-09-14 |
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From Ashley Tacheira:
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.
Answered by Chris Fisher. |
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Bales of hay |
1999-09-13 |
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From Ivy:
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?
Answered by Harley Weston. |
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Inductive reasoning pattern |
1999-09-13 |
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From Greg Walsh:
What are the next 2 rows of the pattern? 3
13
1113
3113
2123
112213
312213
Answered by Walter Whileley. |
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Roman Numerals |
1999-09-13 |
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From April:
Write MCDXCVII in arabic numbers
Answered by Penny Nom. |
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