The actual answer is 522 but if you're supposed to round the numbers , round 375 to 380 and 147 to 150 and you get, 530.
The most accurate estimation of the sum of 375 and 147 is approximately 500 after rounding each number to the nearest hundred. The exact sum of these numbers is 522, but rounding simplifies the calculation for estimation purposes. Thus, estimating is a useful method for quick assessments in mathematics.
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