what period is the precambrian era? No, it's not a period, I can't find an answer, so what period was it in. It was blacked out on the science chart so

Precambrian, period of time extending from about 4.6 billion years ago (the point at which Earth began to form)

Explanation:

Cambrian

Precambrian, period of time extending from about 4.6 billion years ago (the point at which Earth began to form) to the beginning of the Cambrian Period, 541 million years ago.

Explanation:

I hope this helped

the value of the 4 in the hundreds place is 400 while the value of th e 4 in the tens place is 40

400 is way bigger than 40.