# Hard math problems with answers

Listed in the The Guinness Book of World Records as the “most difficult mathematical problem”, partly due to having the largest number of unsuccessful proofs, Fermat’s Last Theorem stimulated the development of algebraic number theory in the nineteenth century and the proof of the modularity theorem in the twentieth century.
In 1994 Andrew Wiles, after seven years research, released a 150 page proof of the solution. This was formally published in 1995 (Annals of Mathematics 141: pp 443-551). The solution proves that all semistable elliptic curves are modular, confirming Fermat’s Last Theorem.

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For his phone service, Ryan pays a monthly fee of \$, and he pays an additional \$ per minute of use. The least he has been charged in a month is … When will beepers beep at the same time  Not rated yet
Maria has 2 electronic beepers. One beeps after every 5 seconds and the second beeps after every 9 second. 1) At what time both beepers will beep at … find consecutive odd positive integers  Not rated yet
The sum of squares of two consecutive odd positive integers is 202. Find the integers. Solution Let 2x + 1 be the first odd integer Then, 2x … cost to copy 4757 pages  Not rated yet
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The larger of two numbers is 4 less than five times the smaller. When the smaller number is subtracted from the larger, the difference is 4. Find the numbers. … Sleep and fraction  Not rated yet
If I live to be 80 years old and sleep 8 hours a day, How many years have I slept Solution A day has 24 hours 24 = 8 + 8 + 8 So you spent … pre algebra  Not rated yet
liz, kyle, and sarah collected empty cans for a recycling drive. kyle collected 12 more cans than liz. sarah collected 2 times as many cans as liz. if … Working together in Sales  Not rated yet
Michael Scott, by himself, can close 8 sales in 4 hours. If he works with Dwight, they can close 8 sales in 2 hours. How many hours does it take Dwight … Debra : Ounces and quarts problem  Not rated yet
A restaurant serves 8 fluid ounces of soup to each customer. How many quarts of soup should be prepared in order to serve 185 customers? Solution … Click here to write your own.

At Third Grade, children enjoy exploring Math with fun Math activities and games. Children will enjoy completing these Math games and Free 3rd Grade Math worksheets whilst learning at the same time.

During Third Grade, the Math work extends to place value up to 10,000. By the end of 3rd grade, most children should be able to add and subtract numbers to 100 mentally, know their multiplication tables up to 10 x 10, and make simple estimates. They are able to multiply and divide at a basic level, and can solve multiplication and division problems.

They have also developed an understanding of negative numbers, and can find fractions of shapes and locate different fractions on a number line.

These free printable Third Grade Math Games, and other free Grade 3 Math Worksheets will help your child to achieve their Elementary Math benchmark set out by Achieve, Inc.