Math Plane 

Past newsletter content, miscellaneous math puzzles, and topics for discussion.

1/4/12

"Factors and Divisibility"

What is the smallest number that is divisible by each natural number from 1 to 10?

SOLUTION

1/2/12

"2012 Puzzle"

Using 2, 0, 1, 2, and any combination of math symbols/operations/functions, write equations that compute to every number between 1 and 25.

Three examples for 0 are given....

(Click the lower right corner to enlarge worksheet. Right click to save to desktop.)

***Note:  Each number (i.e.  2, 0, 1, 2) must be used EXACTLY once!!

***Challenge: Write equations that compute numbers between 26 and 50..



Learn more about 2012 and other numbers at

http://maanumberaday.blogspot.com/



12/27/11

Can you answer correctly?

SOLUTION

12/24/11

Suppose you have a (round) birthday cake. If you made 2 perpendicular cuts through the center, you would have 4 equal slices of cake.

Question: Making exactly 3 cuts, how would you divide a round birthday cake into 8 equal portions?



HINT 

SOLUTION

ALTERNATE SOLUTION

12/19/11

Given:  2, 3, 4, 5, +, =    

Using each number and symbol, construct a valid math equation.  (Each number and symbol will be used EXACTLY once!)

HINT

SOLUTION



More math riddles like this @

 http://mathriddles.williams.edu/

12/15/11

"Poles and Wires"

Two vertical poles in a level surface are 80 feet apart. One pole is 50 feet high. The other pole is 30 feet high.

A wire runs from the top of the first pole to the bottom of the other. And, another wire runs from the top of the other pole to the bottom of the first pole.

How far above the ground do the wires pass each other?

ANSWER 

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