18 + 50 = 68
The 20th century. We add 1 to the first two digits to get the century. This is since the first century is classed as the years 0 to 999, the 2nd century the years 1000 to 1999 etc.
A century has 100 years, so just add 100 to the current year.
If you were born in 1994, you were born in the 20th century. Reason? In the first 100 years (AD) they called it the first century. The next 100 years was the second century and so on and so forth. To put it simply, you add one to the first two numbers of the year. Add one to 19, you get 20. Add one to 20, you get 21. So, in the year 2012, we are in the twenty-first century. =) I hope I answered your question.
There are 12 leap years in 50 years (1/2 a century) each with 366 days. 366 times 12 equals 4,392. Now take 12 away from 50 and you get the number of normal years: 48. 48 years times 365 days equals 17,520. Now add leap-year-days plus normal-year-days. The total is: 21,912.
add half the denominator to the numerator
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one
People add polls to their forums, which is where you can vote. You just click the bullet next to your choice and clikc, "vote."
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Cover the last 2 digits and add 1. So 2010, add 1 to 20 and it tells you that it is the 21st century. 1566, add 1 to 15 and it is the 16th century. If there are less than 2 digits then it will be the 1st century.
There are 12 months in a year, so in 4 years there would be 48 months (4 x 12 = 48). To calculate the number of months in 4 and a half years, you would add half of a year, which is 6 months (0.5 x 12 = 6). Therefore, in 4 and a half years, there would be a total of 54 months (48 + 6 = 54).
The 21st century. Think of it this way. The 1st century is years 1-100. So that's 1. For the rest, simply take the first two digits in the year, in this case 20, and add one. So 20 + 1 = 21, the 21st century.