Mathnasium Interview Question
“How would you teach the problem 999 X 3? Without using vertical multiplication.”
Interview Answer
Anonymous
Jul 14, 2020
First, I turned the paper towards the interviewer to teach the problem to them. The answer is 1,000 X 3 = 3,000 and 1 X 3 = 3, so 3,000 - 3 = 2,997.
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