4th math problem

Look at yhe numbers 855. What is the relationship between the two digits that are 5's on the number.Explain your reasoning.
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Because the same digit is in the ones and the tens position, the values differ by a factor of 10, so 50=10 x 5.

When we add 10 times a number to the number itself we get 11 times the number, i.e., 55.
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