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Significant Digits Mastery

A Grade 12 math worksheet focusing on identifying, counting, and applying significant digits in calculations.

Grade 12 Math Number SenseSignificant Digits
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Includes

Fill in the BlanksMultiple Choice2 Short AnswerTrue / False

Standards

CCSS.MATH.CONTENT.HSA.Q.A.3

Topics

significant digitssignificant figuresprecisionaccuracygrade 12 math
7 sections · Free to use · Printable
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Significant Digits Mastery

Name:

Date:

Score:

Read each question carefully and follow the instructions. Pay close attention to the rules for significant digits in your answers.

State the number of significant digits in each of the following measurements:

1. 0.00345 kg:  

2. 120.00 m:  

3. 6700 L:  

4. 5.0 x 10^4 s:  

5. 900.009 g:  

1. What is the sum of 12.5 cm, 1.25 cm, and 0.125 cm, expressed with the correct number of significant digits?

a

13.875 cm

b

13.9 cm

c

14 cm

d

13.88 cm

2. Subtract 2.345 grams from 10.0 grams. Express your answer with the correct significant digits.

a

7.655 g

b

7.66 g

c

7.7 g

d

8 g

1. A rectangular field has a length of 12.34 meters and a width of 5.6 meters. Calculate the area of the field, expressing your answer with the correct number of significant digits.

2. A car travels a distance of 450.0 km in 5.5 hours. What is the average speed of the car, rounded to the appropriate number of significant digits?

Indicate whether each statement is True or False regarding significant digits.

1. All non-zero digits are always significant.

T

True

F

False

2. Trailing zeros are always significant.

T

True

F

False

Round the following numbers to the specified number of significant digits:

1. 34.567 to 3 significant digits:  

2. 0.00892 to 1 significant digit:  

3. 123,456 to 4 significant digits: