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2nd grade math (Posted on 2017-01-12) Difficulty: 3 of 5
My son is doing a math worksheet. He is practicing the concept of 'carrying' when doing sums. The sheet has 16 problems, each is summing two three-digit numbers. What struck me as interesting was that the creator of the problems made every problem have at least two carries and most have three.

What is the probability distribution for the number of carries in finding the sum of two randomly selected three-digit numbers?

Feel free to generalize.

No Solution Yet Submitted by Jer    
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  Subject Author Date
re(2): solution -- so about that math testJer2017-01-13 16:36:42
re: solution -- so about that math testCharlie2017-01-13 10:55:22
re: solution -- simulation verificationCharlie2017-01-12 21:38:09
SolutionsolutionCharlie2017-01-12 14:48:35
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