Download SIGNIFICANT FIGURES WORKSHEET

SIGNIFICANT FIGURES WORKSHEET
Complete the following practice exercises:
1. How many significant figures are in each of these numbers?
a) 0.0021
b) 347 000
_2___
__3___
c) 900.00 _5___
e) 125 904.000 __9__
d) 407
f) 1.0012
__3___
__5___
2. Express each of the numbers from Problem #1 in standard exponential form.
a)
2.1 x 10-3
c) 9.0000 x 102
e) 1.25904000 x 105
b)
3.47 x 10-5
d) 4.07 x 102
f) 1.0012 x 10o
3. Using scientific notation, express the number 582 000 000 to
a) one significant figure
_6 x 108___________________
b) two significant figures __5.8 x 108_________________
c) three significant figures ___5.82 x 108_______________
d) five significant figures ___5.8200 x 108______________
e) seven significant figures_____5.820000 x 108___________
4. Perform the indicated mathematical operation and express each result to
the correct number of significant figures.
a)
9.33 x 4.1 = __3.8 x 101____
b) 3.01 x 9.00 = __2.71 x 101____
c)
3.894 x 0.06 = _2 x 10-1____
d) 2.98 + 8.1 + 5.0214 = _16.1__
e)
9.543 / 3.54 = __2.70______
f)
g)
0.0010 / 20 = __5 x 10-5___
h) 79.0000 - 79.000 04 = _-4 x 10-5_
i)
9.146 + 9.137 = _18.283__
j)
10.001 / 0.0050 = ___2.9 x 103____
600.0 + 0.000 04 = __600.0__
k)
4.184 x 100.62 x (24.27 - 24.16) = __46___
l)
(8.925 - 8.904) / 8.925 = __,0024____
m) (9.04 + 8.23 + 21.954 + 81.0) / 3.1416 = __38.26___
n) (9.2 x 100.65) / (8.321 - 4.026) = __220__