Question: how to write 12 hundred thousand?
Answer: 12 hundred is 12 100's which is 1,200 (one thousand, two hundred). Add another 0 so that the 12 is in the thousands place values = 12,000 which reads as twelve thousand and is 120 100's. Add yet another 0 = 120,000 which reads as one hundred twenty thousand or 1,200 100's (twelve hundred or twelve hundred 100's).