soccer161
soccer161
07-12-2015
Mathematics
contestada
What is the take from ten strategy
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TortureMan
TortureMan
07-12-2015
It is like when you have the problem 15*6, you don't know how to do that mentally, unless you use the take ten strategy which would turn it into (10*6) + (5*6) so, it simplifies to (60) + (30) which is 90
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