CHEM U1 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
_____
c) 900.00 _____
e) 125 904.000 _____
b) 347 000
_____
d) 407
f) 1.0012
_____
_____
2. Express each of the numbers from Problem #1 in standard exponential form.
a)
_____
c)
_____
b)
_____
d) _____
e) _____
f)
_____
3. Using scientific notation, express the number 582 000 000 to
a) one significant figure
__________________________
b) two significant figures
__________________________
c) three significant figures __________________________
d) five significant figures
__________________________
e) seven significant figures __________________________
4. Perform the indicated mathematical operation and express each result to
the correct number of significant figures.
a)
9.33 x 4.1 = __________
b) 3.01 x 9.00 = __________
c)
3.894 x 0.06 = __________
d) 2.98 + 8.1 + 5.0214 = _________
e)
9.543 / 3.54 = __________
f)
10.001 / 0.0050 = __________
g)
0.0010 / 20 = __________
h)
79.0000 - 79.000 04 = _______
i)
9.146 + 9.137 = _________
j)
600.0 + 0.000 04 = ________
k)
4.184 x 100.62 x (24.27 - 24.16) = _________
l)
(8.925 - 8.904) / 8.925 = ________
m) (9.04 + 8.23 + 21.954 + 81.0) / 3.1416 = ________
n) (9.2 x 100.65) / (8.321 - 4.026) = ________
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