CH 104: Lesson 1a

Quick Quiz - Rounding Off

Perform each of the following calculations and round off the answer to the appropriate number of significant digits. The answers follow at the bottom of the page.

Question 1

13 / 72  =

a.  0.18055
b.  0.1806
c.  0.181
d.  0.18
e.  0.2

Question 2

6.7 x 7.6 =

a.  50.920
b.  50.92
c.  50.9
d.  51
e.  50

Question 3

1.30 x 6.789 =

a.  8.8257
b.  8.826
c.  8.83
d.  8.82
e.  8.8
f.  9

Question 4

0.003 x 6.789 =

a.  0.020367
b.  0.02037
c.  0.0204
d.  0.020
e.  0.02

Question 5

2.0407 + 0.02 =

a.  2.0607
b.  2.061
c.  2.06
d.  2.1
e.  2

Question 6

4.03 - 4.021 =

a.  0.0090
b.  0.009
c.  0.01

Answers

Question 1

13 / 72  =

d.  0.18

Question 2

6.7 x 7.6 =

d.  51

Question 3

1.30 x 6.789 =

c.  8.83

Question 4

0.003 x 6.789 =

e.  0.02

Question 5

2.0407 + 0.02 =

c.  2.06

Question 6

4.03 - 4.021 =

c.  0.01

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