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Natalie has 138 dvds and 419 cds. If you were to estimate the sum of the dvds and cds, what sentence could you write? Then find your estimated sum. My answer is 140 + 420 = 560 is this right..

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Yes

It would be 100 + 400 because it rounds to the highest place value.

Possible answers : 140+420+560 or 100+400 = 500!

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