BC + AD - 1

You have to subtract 1 after adding the year BC to the AD year. There is no year Zero, so the calendar is not a proper timeline. This is not a matter of interpretation (like the new millennium arguments).

If you were born in 1 B.C., then you were one year old in A.D. 1. That's 1 + 1 - 1.

If the start and end years are both BC, then it's a simple subtraction of the smaller number from the larger number, just as you would calculate your own age today.

Note that "BC" is properly written after the year, but "AD" (Anno Domini) goes before the year. If you use the more inclusive "Common Era" notation, then both "CE" and "BCE" go after the year.

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Q: How do you count BC years?

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You count from AD then to BC

years were numbered to count backward to indicate the number of years an event had occurred “before Christ” or “B.C.”

Yes it was. The years BC count backwards to the year 1 BC (12000, 11999, 11998 etc)

Yes, by 150 years. in BC or BCE as they like to call it nowadays, you count downwards.

In terms of "BC" years, 750 BC is 50 years after 800 BC because BC years count down from the year before, instead of up like we currendly do in AD. For example, if this year were 2009 BC, next year would be 2008 BC.

BC= stands for Befor Christ(count down) AD= stands for nAnno Domini(in the year of the lord) You know when years counted down right? Well that is BC. Then AD is when the years count up. When the abbreviations are the same then subtract(-) if they are different the add(+) 500 BC And 500 AD its 1,000 years! Now do you get it? If you still dont get it.... ASK YOUR TEACHER!

290 BC was 2300 years ago. 290 BC means 290 years before Jesus Crist was born which is the starting point from wich we count our present years. So you add the amount of years since Jesus Christ was born, currently 2010, and add the amount of years BC and you get the total of years: 2010 + 290 = 2300 So 290 BC was 2300 years ago.

Yes. The last dinosaur (unless your count birds) died 65,000,000 years ago.

1600 BCE - with BCE you count backwards, with CE you count forwards - 0 is the neutral point from which you count rather way.

10,000. In BC/BCE you count down to go forward, in AD/CE you count up to go forward.

BC means Before Christ. Intead of counting up the years like you do in AD (AD is what we count in now, e.g. 2001, 2002, 2003), you count backwards till you get 0 BC, which is when Christ was born. After 0 BC starts 1 AD then 2 AD etc. So basically, if you started in 2457 BC, and finished 14 years later, you would finish in 2443 BC.

The last date of BC was 1 BC, then the first date of AD was 1 AD, there was no zero.

As of today May 19, 2010 4010 years 4 months and 19 days passed.... This calculations does not count the time variation when people started counting as AD/ BC time which is estimated between 4 and 6 years...

49 years

2451 years

15 years

470 years.

From 15 BC to 0, there is a timespan of 15 years. From 0 to AD 15, there is a timespan of 15 years. 15 + 15 = 30. So, 30 years. ========================================= From the end of 15 BC to the end of 15 AD = 30 years From the end of 15 BC to the beginning of 15 AD = 29 years From the beginning of 15 BC to the end of 15 AD = 31 years From the beginning of 15 BC to the beginning of 15 AD = 30 years 29: There was no year zero. AD1 follows BC1. Measure from same day in each year: From BC 15 to BC 1 there are 14 years (15 to 14 is 1 year etc) From BC 1 to AD 1 there is 1 year. From AD 1 to AD 15 there are 14 years. Total 29 years. Or, using the rule: Sobtract the two years from each other (count BC as negative) and then subtract another 1 if going from BC to AD and you get 15 - (-15) -1 = 29.

BC means before Christ. Thus, 2500 BC is about 4500 years in the past.BC means before Christ. Thus, 2500 BC is about 4500 years in the past.BC means before Christ. Thus, 2500 BC is about 4500 years in the past.BC means before Christ. Thus, 2500 BC is about 4500 years in the past.

Yes, prior to the birth of Jesus Christ years counted backwards.....30 B.C. stands for 30 years Before Christ

2000 years BC + 2007 years AD

Cleopatra would have turned 18 in the years 51 BC.Cleopatra would have turned 18 in the years 51 BC.Cleopatra would have turned 18 in the years 51 BC.Cleopatra would have turned 18 in the years 51 BC.Cleopatra would have turned 18 in the years 51 BC.Cleopatra would have turned 18 in the years 51 BC.Cleopatra would have turned 18 in the years 51 BC.Cleopatra would have turned 18 in the years 51 BC.Cleopatra would have turned 18 in the years 51 BC.

1900 years.

63 years.

2450 years