The method that we learn in school is a long multiplication method. But this method is very time consuming. SO let’s learn a much faster way to multiply a 2-digit number by 11. Step 1 - Write 3 and 6 ...
HOUSTON (KTRK) -- A mental math system developed in the 1800's is helping some local students ace standardized tests and win math competitions. But the method isn't taught in most Houston schools.
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