Years
Hundreds
Thousands
Millions
Decades
100

2030

Two Thousand Thirty

or 

Twenty Thirty

100

125

One Hundred Twenty Five

100

1,002

One thousand two

or 

One thousand and two

100

1,235,990

one million two hundred thirty five thousand nine hundred and ninety

100

1980s

nineteen eighties

200

1975

Nineteen Seventy Five

200

111

One hundred eleven

or

One hundred and eleven

200

2,390

Two thousand three hundred ninety

or 

Two thousand three hundred and ninety

200

10,990,000

ten million nine hundred and ninety thousand

200

1990s

nineteen nighties

300

2011

Twenty Eleven

or 

Two Thousand Eleven

300

309

Three hundred nine

or

Three hundred and nine

300

3,025

three thousand twenty five

or

three thousand and twenty five 

300

100,500,300

one hundred million five hundred thousand three hundred

300

2000s

two thousands

400

1999

Nineteen Ninety Nine

400

417

four hundred seventeen

or

four hundred and seventeen

400

50,001

fifty thousand one

or

fifty thousand and one

400

25,555,999

twenty five million five hundred fifty five thousand nine hundred and ninety nine

400

1970s

nineteen seventies

500

1980

Nineteen Eighty

500

890

eight hundred ninety

or

eight hundred and ninety

500

700,390

seven hundred thousand three hundred ninety

or

seven hundred thousand three hundred and ninety

500

980,701,001

nine hundred eighty million, seven hundred and one thousand and one  

500

1800s

eighteen hundreds