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Which of the following represents the most accurate estimation of 375+147
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Which of the following represents the most accurate estimation of 375+147

User Armstrong
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You can round 375 up to 380 (because the ones is 5 or greater).  147 would be rounded to 150.  Then add 380 and 150 and that will give you 530.  375+147≈530
User Warjeh
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