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418 + 78

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418 + 78

496

First, add the digits other than the units, 410 + 70 = 480. Remember that for a moment. Now, add the one's digits, 8 + 8 = 16. Now, add the 16 to the 480 to get 496. ---- Alternately, subtract two from 418 and give it to 78, so we have 416 + 80 = 496.

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