estimate each of the following using general rule
28292 - 2 1496
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estimate of 12, 904 + 2,888 is equal to 16,000 according to the general rule. Therefore,estimate of 28,292 - 21,496 is equal to 7,000 according to the general rule. Therefore,estimate of 478-312 is equal to 200 according to the general rule.
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