Question

Lucinda has three packages of baseball cards. The first package has thirteen cards. The second package has twenty-six cards, and the third package has twenty-two cards. Using front end estimation, what is the best estimate for the total number of baseball cards she has?

Answer 1

Using front end estimation, we round to the nearest ten, so 13 rounded to the nearest ten is 10, 26 to the nearest ten is 30, and 22 to the nearest ten is 20. We add 10 + 30 + 20 to get 60.
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