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Precision and Accuracy with Significant Figures Test Review

Total questions: 46

Worksheet time: 44mins

Name
Class
Date
1.
How many estimated digits should there be in an accepted measurement?
a)
0
b)
1
c)
2
d)
3
2.
This bullseye demonstrates...
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
3.
How many significant figures does the following number have: 0.9870477
a)
8
b)
6
c)
5
d)
7
4.
How many significant figures does the following number have: 100.3
a)
4
b)
3
c)
5
d)
2
5.
How many significant figures does the following number have: 0.045960
a)
3
b)
5
c)
6
d)
7
6.
How many significant figures does the following number have: 1740200
a)
2
b)
1
c)
3
d)
5
7.
Round 0.0010021 to three sig figs
a)
100
b)
0.00100
c)
10021
d)
already has 3 sig figs
8.
Round 1009 to three sig figs
a)
100
b)
101
c)
1010
d)
1000
9.
Which of the following measurements is expressed to three significant figures?
a)
0.007 m
b)
7077 mg
c)
7.30 x 10-7 km
d)
0.070 mm
10.

Which of the following measurements is expressed to two significant figures?

a)

0.007 m

b)

77.0 mg

c)

7.30 x 10-7 km

d)

0.070 mm

11.
In the measurement 0.503 L, which digit is the estimated digit?
a)
5
b)
the 0 immediately to the left of the 3
c)
3
d)
the 0 to the left of the decimal point
12.
What is the measurement 1042 L rounded off to two significant digits?
a)
1.0 x 103 L
b)
1040 L
c)
1050 L
d)
1.1 x 103 L
13.

If the mass of a rock is measured as 5.00 g and the volume is 130 mL, what is its density? (D= m/v) (Leave your answers according to the rule for division!)

a)

650 g/mL

b)

0.0385g/mL

c)

0.038 g/mL

d)

380 g/mL

14.
Calculate 12.34 + 1.234 + 0.1234
a)
13.6974
b)
13.697
c)
13.70
d)
13.7
15.

Calculate 12.340 × 1.2340 × 0.1234

a)

1.87908

b)

1.879

c)

1.88

d)

1.8791

16.
How many sig figs are in 90000 ml
a)
1 sig fig
b)
5 sig figs
c)
4 sig figs
17.
How many sig figs in 900. g/ml
a)
1 sig fig
b)
2 sig figs
c)
3 sig figs
18.
Three different people weigh a standard mass of 2.00 g on the same balance.  Each person obtains a reading of 7.32 g for the mass of the standard.  These results imply that the balance that was used is ____.
a)
accurate
b)
precise
c)
accurate and precise
d)
neither accurate nor precise
19.
Accuracy is defined as
a)
close repeated measurements
b)
awesome measurements
c)
really good guessing
d)
measurement near the true value
20.
Measurements that are repeated and close to each other can be defined as:
a)
accurate
b)
accurate and precise
c)
precise
d)
estimated
21.

Romy's measurements: 6.02 m, 6. 04 m, 6.03 m

Actual Value: 6.02 m

How would you define her measurements?

a)

accurate on one and precise

b)

accurate

c)

precise

d)

neither

22.
An object is measured to be 3.12g.  The accepted value is 4.50g.  What is the percentage error for this measurement?
a)
43.1%
b)
30.7%
c)
30.666%
d)
25.1%
23.
The students measured length during a science experiement, they got 12 cm. But the actual measurement was 14.25 cm. What was the percent error?
a)
15.79%
b)
18.75%
c)
2.25%
d)
18%
24.

Find the percent error. Round to the nearest tenth of a percent.

Actual speed: 38 mph

Estimated speed: 35 mph

a)

8.1%

b)

0.79%

c)

7.9%

d)

6.8%

25.
When a measurement is repeatable and consistent it is said to have...
a)
High precision
b)
Low precision
c)
High accuracy
d)
Low accuracy
26.
?
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
27.
Which is the more precise measurement?
a)
4 mL
b)
4.3 mL
28.

How many significant figures should your answer have for the following multiplication problem 19.10 X 18.0 X 22

a)

2

b)

4

c)

3

d)

none

29.

A zero percent error in a lab is accomplished by__

a)

having a really good measuring device

b)

making sure all the steps in a procedure are being followed

c)

getting the exact result as the expected result in a lab

d)

rounding numbers to zero

30.

Which zeros never count for significant figures?

a)

Leading Zeros

b)

Trailing Zeros

c)

Captive Zeros

d)

All the Zeros

31.

How many significant figures are in the number? 75,000 m

a)

2

b)

3

c)

5

d)

unknown

32.

How many significant figures are in the number? 0.003 m

a)

3

b)

2

c)

4

d)

1

33.

How many significant figures are in the number? 75.00 m

a)

2

b)

3

c)

4

d)

unknown

34.

Calculate the following and leave answer according to the rules for calculations involving measurements.

6.201 cm + 7.4 cm + 0.68 cm +12.0 cm =

a)

26.281 cm

b)

26.28 cm

c)

26.2 cm

d)

26.3 cm

35.

Calculate the following and leave answer according to the rules for calculations involving measurements.

20.2 cm ÷ 7.41 s

a)

2.726045884 cm/s

b)

2.72604 cm/s

c)

2.73 cm/s

d)

2.7 cm/s

36.

Calculate the following and leave answer according to the rules for calculations involving measurements.

3.05g + 0.013g

a)

3.063g

b)

3.06g

c)

3.1g

d)

3g

37.

Calculate the following and leave answer according to the rules for calculations involving measurements.

5.4m x 7.90m

a)

42.66 m2

b)

42.7 m2

c)

43 m2

d)

40 m2

38.

What does the following calculation involving measurements need in its answer?

300m x 2.0m

a)

1 decimal place

b)

3 significant figures

c)

0 decimal places

d)

1 significant figure

e)

2 significant figures

39.

What does the following calculation involving measurements need in its answer?

0.0500 m + 2.0m + 0.01m

a)

1 decimal place

b)

3 significant figures

c)

2 decimal places

d)

1 significant figure

e)

2 significant figures

40.

A group measured the length of a string and recorded the following :

0.0259 m ; 0.031 m ; 0.027m.

Calculate the precision for the group's measurements.

4 lines
41.

When the value 4.449 is rounded to two significant figures, the number should be reported as:

a)

4.4

b)

4.5

c)

4.44

d)

4.45

e)

none of the above

42.
Round 1047.78 to three sig figs
a)
104
b)
105
c)
1050
d)
1050.00
43.
What is 0.658 rounded to 1 significant figure?
a)
0
b)
0.66
c)
0.6
d)
0.658
44.

Calculate the following and leave answer according to the rules for calculations involving measurements.

32.451 - 21.5

a)

11.0

b)

10.951

c)

11

d)

10.95

45.

Calculate the following and leave answer according to the rules for calculations involving measurements.

25.0 x 17 = ?

a)

430

b)

425

c)

425.0

d)

430.0

46.

A group measured the mass of a metal and recorded the following


25.85g, 25.70 g, 26.25 g ,24.99g

Calculate the precision for the group's measurements.

4 lines

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