Builds math computation skills
What do you notice about the third sum you came up with? It is a palindrome! Challenge students to test this idea. Is it always the case? Do you always end up with a palindrome sum at the end of three computations that begin by adding palindromes?
Start with 362.
Reverse the number to create its palindrome. (362 becomes 263.)
Add together the two numbers. (362 + 263 = 625)
Take the sum of the two numbers and add it to its palindrome. (625 + 526 = 1251)
Take the sum of those two numbers and add it to its palindrome. (1251 + 1521 = 2772).
Your third sum, 2772, is a palindrome!
Article by Gary Hopkins
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