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sample Q from each layer	teach-learn questions												whole_number.mp4
layer	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16
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NC information

N15 round numbers and measures to an appropriate degree of accuracy (e.g. to a specified number of decimal places or significant figures); use inequality notation to specify simple error intervals due to truncation or rounding

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