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9. Plotting Measurements
Example
2:
Today’s date is: June 12, 2001.
Your are measuring a child whose birthdate is August 20, 1998.
Set up the calculation. Subtract the birthdate from the date of the measurement.
It may be necessary to convert months to days and years to months.
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Year
|
Month
|
Day
|
|
Date
of Measurement
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2001
|
06
|
12
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3.
Convert year to months by subtracting 1 from the years. |
1. Convert
months to days by subtracting 1 from the number of months
in the date of measure.
4. Add 12 to the number of months.
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2.
Add 30 days to the number of days in the date of the measure. |
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Date
of Birth
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1998
|
08
|
20
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|
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2001
- 1 = 2000
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06
- 1 = 5 + 12 = 17
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12
+ 30 = 42
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7.
Subtract the birth year from the number of years. |
6.
Subtract the birth month from the number of months. |
5.
Subtract the day of the birth from the number of days. |
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2000
- 1998 = 2
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17
- 08 = 9
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42
- 20 = 22
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Current
Age
|
2
years
|
7
months
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22
days
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The child’ age
is: 2 years, 9 months, 22 days and is plotted as 2 years, 9 1/2 months.
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