
Elementary Math Fractions, Percentages, Word Problems, Equations, Inequations, Factorization, Expansion 
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December 7th, 2018, 04:03 AM  #1 
Senior Member Joined: Nov 2011 Posts: 250 Thanks: 3  exploring elementary exercise
The exercise is: $\ \ \ $ 53 $$ 26  What should the pupil have to know to solve this exercise? What is the preliminary knowledge they need to solve the exercise? Last edited by skipjack; December 7th, 2018 at 10:10 AM. 
December 7th, 2018, 04:07 AM  #2 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 14,597 Thanks: 1038 
26 + ? = 53

December 7th, 2018, 06:37 AM  #3 
Global Moderator Joined: Oct 2008 From: London, Ontario, Canada  The Forest City Posts: 7,946 Thanks: 1137 Math Focus: Elementary mathematics and beyond 
13  6 = 7 40  20 = 20 
December 7th, 2018, 07:24 AM  #4 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 14,597 Thanks: 1038 
"Numbers don't lie. They hide, but they don't lie." Numbers make some people numb. 

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