Place Value Uses--Years

Place Value Uses--Years

by Ann Hartter

​One year is in the ones place

Ones place

​1, 2, 3, 4, 5, 6, 7, 8, and 9 are all years in the ones place

​10 years is a decade

​

​Decades

​10, 20, 30, 40, 50, 60, 70, 80, and 90 are all decades.

​100 years is a century

​

​Centuries

​100, 200, 300, 400, 500, 600, 700, 800, and 900 are centuries.

​one more

​

​1,000 years is a millennium

​Millennia

​1000

​2000

​3000

​4000

​5000

​6000

​7000

​8000

​and

​9000

​are millennia

​so what? you ask

​

​The year is

TWO THOUSAND

​

​TWENTY

​

​ONE

​You were born in

BONUS STUFF

There are a lot of years

​This isn't all of them.

​

Also,

​what are they doing with the counting?

​Counting years

• After you are born, before you turn 1

• ​After your first birthday

• ​After your 2nd birthday

• ​After you've had 3 birthdays

• ​After you've had 4 birthdays

• ​After you turn 5

• ​After you turn 6

• After you turn 7

Your first year

Second year

Third year

Fourth year

Fifth year

Sixth year

Seventh year

Eighth Year

The Red list is how many calendars your parents bought.

​The Blue list is how old you tell people you are.

​Our age counts BIRTHDAYS, and celebrates what we've FINISHED,

not what we've STARTED or what we're in the MIDDLE of.

​We're in the MIDDLE of

​the SECOND year

​of the THIRD decade

​of the THIRD millennium

​

​even though we say it's 2021.

​

​

The 21st Century

​We also call the 3rd Millennium the 21st Century.

​

​If you write 21 in the hundreds spot

(because Century means 100)

​

​you get

​

​what looks like 2 thousand 1 hundred?

​Yep. 21 hundreds is 21 times 100.

​21 centuries is 2100.