Farm Fair Contest
What is the minimum number of weighing operations required
to measure 63 kg of wheat,
if only one weight of 1 kg is available?

Your answer:  3 
Explanation:  
About Me: I like Turtles
Shaka Prynne from United States School: Richmond Elementary    Report Abusive 
Your answer:  If I want to minimize trips to teh scale, I'd say 7. 
Explanation:  OK, the scale only weighs 1Kg at a time, but wheat has a uniform density, so I ask my workers to make nine fairly equal piles of wheat. Then I take one pile of wheat and weigh it in 1kg increments.
Nine is a good number because it is the largest number you can remember without writing it down. Each pile should weigh whatever it weighs (actually 7kg), and with a weight of 1kg, it's seven trips to the scale. Of course you have the work of shoveling all those piles. 
someone from Antigua and Barbuda School: crazy elementary    Report Abusive 
Your answer:  63 
Explanation:  i think it's 63 cause it is 63!! 3 
About Me: i'm a alien, a dumb alien, and i LOVE icecream, but i hate i mean HATE HATE HATE language but math okay XD
i hate this question!!! from Zimbabwe School: Some School    Report Abusive 
Your answer:  63 
Explanation:  idk 
About Me: i HATE math and i HATE language!!! i wish i don't have to go to my boring, weird, old school!! >:( I DON'T LIKE SCHOOL!!!!!!!!!!!!!!!!!!!!!!!!!!
Your answer:  63 
Explanation:  
About Me: i love ice cream! mmm :b
Your answer:  63 
Explanation:  Because there is the 63 kg. 