Significant Digits   Answers
Practice Problems Level 2
1.  How many significant digits are there in each of the following measurement?
a.   3.58 g
f.    804.58 kg
b.  14.809 cm
g.   0.007832 cg
c.   107.334 km
h.   130,004.5 mm
d.   0.0004898 mm
i.    250.00 km
e.   3000 cm
j.    14.380 s


2.  Express the answer to each of the following calculations with the correct number of significant digits.
a.   82.5 cm + 13.56 cm
f.    13.80 cm - 6.0741 cm
b.   16.8892 km + 3.5 km
g.    8.472 cg - 1.440 cg
c.   45.456 g + 3.56 g
h.   30 s - 1.442 s
d.   106.22 mm + 80.0 mm
i.    54.00 g - 30.2020 g
e.   30.44 kg + 3.9422 kg
j.    1.45050 kg - 0.00667 kg


3.  Express the answer to each of the following calculations with the correct number of significant digits.
a.   8.4 cm X 3.58 cm
f.    35.068 km3 ÷  5.7 km
b.   1.075 m X 2.0 m
g.   85.0869 m2  ÷  9.0049 m
c.   3.0899 mm X 22.4 mm
h.    0.00826 cm2  ÷  0.00033 cm
d.   0.00457 cm X 0.18 cm
i.     0.005600 mm2  ÷  0.200 mm
e.   10.00 m X 84.767 m
j.     3.4500 cm ÷ 450 cm