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A reasonable estimate will give an indication of the order of magnitude of the number. The order of magnitude is determined by the decimal point and so knowing the order can help in placing it.
The order of magnitude is millions - 2 million, rounded.
The way I really understand it, is that its estimating by the highest place value, not a very close estimation, but still around the number.
2.5
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the correct answer is 0.
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The order of magnitude for the number of children in an average American family is 1 (one). The average number of children per family in the United States is around 1.9, which is closest to 1 when considering orders of magnitude.
false
OOM (Order of magnitude) estimate
600000
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The order of magnitude is "tens".