BC/AD and BCE/CE

Definitions

100

B.C.

Before Christ

200

B.C.E.

Before Common Era

300

C.E.

Common Era

400

A.D.

Anno Domini

500

Which label are we in right now?

AD or CE

What Century

100

1587

16th C

200

1854

19th C

300

307

4th C

400

45

1st C

500

2000

20th C

How Old

100

AD 1532 and 1967 BC

3499 years

200

1969 CE and 2023 CE

54 years

300

2026 BCE and 1990 BCE

36 years

400

1492 BC and AD 576 

2068 years

500

300 BC and 1652 BC

1352 years

Helpful Hints

100

Same label=

Subtract

200

Different label=

Add

300

What is the century hint?

Cover last 2 numbers then add 1. 

400

What happens if the year is under the number 100?

It's the 1st century

500

What happens if the year ends in double zero (00)?

Keep the first 2 numbers the same. 

Other Definitions

100

Millenium

1000 years

200

Decade

10 years

300

Century

100 years

400

Circa

around

500

Era

a period of time marked by a distinctive event