Subtracting Two Digit Numbers How to subtract two digit numbers (for example 67 - 45). Place one number above the other so the tens' place digits and ones' place digits are lined up. Draw a line under the bottom number. 67 45 Subtract the two digits in the ones' place column.
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PICOT Defined. (P) â Population refers to the sample of subjects you wish to recruit for your study. There may be a fine balance between defining a sample that is most likely to respond to your intervention (e.g. no co-morbidity) and one that can be generalized to patients that are likely to be seen in actual practice.