00:06
Okay, so let's write these numbers in scientific notation and at the same time using two significant digits.
00:15
So remember, the scientific notation is a way to express very, very large numbers or very, very long, small numbers in a concise word using exponents of 10, so power of 10.
00:34
So in this case, we have a number that is bigger than one.
00:41
So if i have a number bigger than one, i'm going to assume that i have a decimal point in here, and i'm going to move this decimal point in between the first two digits that are not zero.
00:52
So we need a single digit.
00:55
So i have a five in here.
00:57
Okay, and i move this decimal point one, two, and three times.
01:02
So i moved it three times.
01:05
So what i'm going to do now is that i'm going to write this number with two significant digits in scientific notation.
01:12
So i have 5 .0.
01:18
Remember, scientific notation, power of 10, and i move the decimal point three times.
01:25
And your exponent is going to be the times that you move the decimal point.
01:29
And in this case, your exponent is positive because this whole number is bigger.
01:35
Than zero...