Which is the best estimate of the product of 0.9 x 0.88?

Since 0.9 and 0.88 are both close to 1, their product should also be close to 1. Calculating gives 0.9 × 0.88 = 0.792, which is closer to 1 than to 0.5, 0.25, or 0. The best estimate is 1.

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