Which gives the best estimate and the exact product of (5.9)(8.28)?

For an estimate, round 5.9 to 6 and 8.28 to 8; then 6 × 8 = 48. For the exact product, 5.9 × 8.28 = 48.852. So the choice with an estimate of 48 and exact product 48.852 is correct.

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