2007 AMC 8 Problems/Problem 18
Contents
[hide]Problem
The product of the two -digit numbers
and
has thousands digit and units digit . What is the sum of and ?
Solution
We can first make a small example to find out and . So,
The ones digit plus thousands digit is .
Note that the ones and thousands digits are, added together, . (and so on...) So the answer is This is a direct multiplication way.
Video Solution by OmegaLearn
https://youtu.be/7an5wU9Q5hk?t=2085
~ pi_is_3.14
Video Solution by WhyMath
~savannahsolver
See Also
2007 AMC 8 (Problems • Answer Key • Resources) | ||
Preceded by Problem 17 |
Followed by Problem 19 | |
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All AJHSME/AMC 8 Problems and Solutions |
The problems on this page are copyrighted by the Mathematical Association of America's American Mathematics Competitions.