Quiz 2 (PSS)

Question 1

Subtract 9.0 x 103 from 2.0 x 104 and express the answer in scientific notation.

Answer 1

1.1 x 10^4

Question 2

Multiply 7.2 cm by 3.75 cm by 1.555 cm and round off the answer.

Answer 2

42 cm^3

Question 3

Add 7.77 g to 11.666 g and round off the answer.

Answer 3

19.44 g

Question 4

How many significant digits are in the length measurement 61,000 cm?

Answer 4

2

Question 5

Express 0.000 000 000 000 1 as an exponential number.

Answer 5

1 x 10^-13

Question 6

How many significant digits are in the volume measurement 0.010 mL?

Answer 6

2

Question 7

Add 2.33 x 103 to 4.16 x 102 and express the answer in scientific notation.

Answer 7

2.75 x 10^3

Question 8

What is the term for eliminating digits that are not significant?

Answer 8

Rounding off

Question 9

Round off the following measurement to three significant digits: 2252 cm.

Answer 9

2250 cm

Question 10

What is the term for the certain digits in a measurement plus one estimated digit?

Answer 10

Significant digits

Question 11

Divide 6.41 x 10-3 by 8.04 x 107 and express the answer in scientific notation.

Answer 11

7.97 x 10^-11