November 23rd, 2017, 11:49 AM  #1 
Newbie Joined: Nov 2017 From: Toronto Posts: 2 Thanks: 1  10 year olds math assignment challenge!
The task: Using all the digits of the year 1492 only once and in the exact order that they appear in the year 1492, construct all numbers from 1 to 100! You can use any of the following operations: square root, factorials, exponents, decimals, parentheses, negative numbers, addition, multiplication, subtraction, division. Examples: 84 = 14 x √9 x 2 90 = (1+4) x 9 x 2 We still need the following numbers calculated: 40 41 49 59 61 62 64 The rest we’ve already calculated! Thanks for your help! 
November 23rd, 2017, 04:54 PM  #2 
Senior Member Joined: Nov 2010 From: Indonesia Posts: 2,001 Thanks: 132 Math Focus: Trigonometry 
Another game, eh? Interesting... $\displaystyle 40=1\times4+9^2$ $\displaystyle 41=(1+4)+9^2$ $\displaystyle 64=(1\sqrt4+9)^2$ I'll leave the rest to Denis McField. 
November 23rd, 2017, 04:55 PM  #3 
Senior Member Joined: Feb 2016 From: Australia Posts: 1,765 Thanks: 623 Math Focus: Yet to find out.  
November 23rd, 2017, 05:05 PM  #4 
Global Moderator Joined: Dec 2006 Posts: 20,301 Thanks: 1971 
Perhaps Monox D. IFly has been doing a headstand, as 9² isn't 36. 40 = 14*√9  2 41 = 1 + 4! + 9*2 49 = (1 + (√4)^(√9))^2 59 = 1 + 4*(√9)/.2 61 = 1 + 4^(√9)  2 62 = 1*4^(√9)  2 64 = (1*(√4)^(√9))^2 
November 23rd, 2017, 06:38 PM  #5 
Senior Member Joined: Nov 2010 From: Indonesia Posts: 2,001 Thanks: 132 Math Focus: Trigonometry 
Oops, guess I am being stoned when doing my headstand. Well, at least my answer for 64 was correct, so my post didn't go in vain.

November 23rd, 2017, 09:15 PM  #6 
Newbie Joined: Nov 2017 From: Toronto Posts: 2 Thanks: 1 
That’s awesome! Thank you! 
November 18th, 2018, 12:17 PM  #7 
Newbie Joined: Nov 2018 From: Mississauga Posts: 5 Thanks: 0 
Wow, you guys are smart! Can you help me with some numbers...? I need help with 27, 31, 45, 57, 55, 58, 68, 69, 70, 79, and 83 
November 18th, 2018, 12:22 PM  #8 
Newbie Joined: Nov 2018 From: Mississauga Posts: 5 Thanks: 0 
Oh and here are the answers to your questions... : 40= 14* squrt9 2 41=1+4!+9*2 49=(1+(squrt4)^(9))^2 59=1+4*(squrt9) divided by 2 
November 18th, 2018, 12:31 PM  #9 
Senior Member Joined: Aug 2012 Posts: 2,157 Thanks: 631  
November 18th, 2018, 01:28 PM  #10 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 13,979 Thanks: 994  

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