: Step 1identify the conversion equation.
(Choose one from the
conversion chart)
Explanation:
the equation should contain both units invloved in the conversion.
Examples:
1 = 2.2 Kg OR
1 lbs = 60 grain.
mg: Step 2make a fraction that equals 1.
Explanation:
realize that the left and right sides of the conversion equation are the same numeric value stated in different units AND anything divided by itself equals 1, then make the fraction using these equivalent values.
Examples:
The equation (1 Kg = 2.2 lbs) yields: 1 Kg 2.2 lbs either ------- = 1 or ------- = 1 2.2 lbs 1 kg While the equation (1 grain = 60 mg) yields: 1 grain 60 mg either ------- = 1 or ------- = 1 60 mg 1 grainYou got it! Each of those fractions equals 1 and is called the .
conversion factor: Step 3choose the most appropriate .
conversion factorExplanation:
realize that the units in the numerator will be preserved and the units in the denominator will be cancelled out. So choose the fraction that has the units you want keep in its numerator. Or choose the fraction that has the units to convert in its denominator. Either way you think about it, it will be the same fraction.
Examples:
To convert lbs to kg use: To convert kg to lbs use: 1 Kg 2.2 lbs ------- ------- 2.2 lbs 1 Kg To convert grains to mg use: To convert mg to grains use: 60 mg 1 grain ------- ------- 1 grain 60 mg : Step 4do the conversion.
Explanation:
Simply multiply the number to be converted by the conversion factor, cancelling as you go. (Hint: multiply the value to be converted by the numerator of the conversion factor.)
Examples:(Choose a conversion factor from Step 3 above.) 1) Convert 132 lbs to kg. First, set up the fraction like this: (1 kg) (132 lbs)(1 kg) (132 lbs) ------- = --------------- 2.2 lbs 2.2 lbs See how lbs will cancel out, and kg will be preserved? Then multiply it out, cancelling as you go: 132 kg ------ = 60 kg 2.2 2) Now done faster: Convert 80 kg to lbs. (80kg)(2.2 lbs) 176 lbs --------------- = ------- = 176 lbs 1 kg 1 Can you recognize the conversion factor on the left side of the above equation? 3) Now one using grains: Convert 7.5 grains to mg. (7.5 grains)(60 mg) 450 mg ------------------ = ------ = 450 mg 1 grain 1 4) Last one: Convert 120 mg to grains. (120 mg)(1 grain) 120 grain ----------------- = --------- = 2 grains 60 mg 60 |