SI Time Units

Name: ___________________________________

So called Standard Notation puts the the English name of the month first, then the day of the month, followed by a comma, and finally the year, like so:


September 4, 1961


Of course standard notation is only standard in countries with a British heritage. Other countries will use their own language, and sometimes a different order of the day, month, and year. This brought about the need for a Standard International means of writing time, or SI notation. This is the 4 digit year, a space, the 2 digit month, a space, and a 2 digit date, like so:


1961 09 04


Write the following in SI notation

a) March 1, 2004 ___________________ b) February 29, 2000 ___________________
c) June 16, 1921 ___________________ d) November 21, 2112 ___________________
e) July 4, 1776 ___________________ f) April 1, 2009 ___________________

Write the following in Standard notation

a) 1864 03 22 ________________________ b) 1999 12 31 ________________________
c) 2004 05 30 ________________________ d) 1929 10 29 ________________________
e) 1066 10 14 ________________________ f) 1759 09 18 ________________________

How do you know this date is incorrect 1997 26 09? Write in standard notation what date I meant to write.




The Language of time

Express the following as a numeric time

a) twenty to four ________________________ b) quarter to ten ________________________
c) three fourty ________________________ d) five minutes to one ________________________
e) quarter past seven ________________________ f) twelve past six ________________________

The Magnitude of time

a) How many seconds in a minute? ________________________
b) How many minutes in an hour? ________________________
c) How many hours in a day? ________________________
d) How many minutes in 5 hours? ________________________
e) How many seconds in an hour? ________________________
f) How many months in a year? ________________________
g) How many hours in 3 days? ________________________
h) How many days in a year? ________________________
i) How many years in a decade? ________________________
i) How many years in a century? ________________________
i) How many years in a millenium? ________________________

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