Logarithm Review Sheet
Use a calculator to find out the log of the following numbers:
1 x 10-5
1 x 10-6
1 x 10-7
2 x 10-5
2 x 10-6
2 x 10-7
3 x 10-5
3 x 10-6
3 x 10-7
3.16 x 10-5
3.16 x 10-6
3.16 x 10-7
9.5 x 10-5
9.5 x 10-6
9.5 x 10-7
Did you see the pattern?:
Did you notice that 9.5 x 10-5 was close to 4? Why? Because 10 x 10-5 is the same as 1 x 10-4. 9.5 x 10-5 is a BIGGER number than 1 x 10-5
Did you notice that all of the numbers in the same series (eg. All of the numbers with a 2 in front of them) had the same decimal numbers?
Did you notice that 3.16 gave you a value of 0.5? (it’s the half-way point)
1 x 105
1 x 106
1 x 107
2 x 105
2 x 106
2 x 107
3 x 105
3 x 106
3 x 107
3.16 x 105
3.16 x 106
3.16 x 107
9.5 x 105
9.5 x 106
9.5 x 107
Did you see the pattern?:
Did you notice that 9.5 x 105 was close to 6? Why? Because 10 x 105 is the same as
1 x 106. 9.5 x 105 is a BIGGER number than 1 x 105
Did you notice that all of the numbers in the same series (eg. All of the numbers with a 2 in front of them) had the same decimal numbers?
Did you notice that 3.16 gave you a value of 0.5? (it’s the half-way point)