How many significant figures are in the following measurements?

a. 300000000m/s

b. 3.00x10 (8th power)

c. 25.030*c

d. 0.006070 * c

e. 1.004 J

f. 1.30520 MHz

The number of significant figures are based on the rules: non-zeros are significant Zeros in between non-zeros are also significant. Trailing zeros are considered not significant. Zeros after the decimal and non zeros are significant.

a. 1

b. 3

c. 5

d. 4

e. 4

f. 6

The number of significant figures are counted by,

non-zeros are significant

Zeros in between non-zeros are significant.

Zeros after the decimal and non zeros are significant.

a. 300000000m/s = 1 significant figure

b. 3.00x10 (8th power) = 3 significant figures

c. 25.030*c = 4 significant figures

d. 0.006070 * c = 5 significant figures

e. 1.004 J = 4 significant figures

f. 1.30520 MHz = 5 significant figures