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Choose the number that is closest to 53 plus 83: 200, 300, or 100.
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Before we can choose the number that’s closest to 53 plus 83, let’s estimate 53 plus 83.
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We can round 53 down to 50 and we can round 83 to 80.
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Now we’re asking, what is 50 plus 80?
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Five plus eight equals 13; then we bring over our zero.
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50 plus 80 equals 130, and 130 is closest to 200, 300, or 100.
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100, 130 is closest to 100.