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How many significant digits? How many significant digits?

How many significant digits? - PowerPoint Presentation

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Uploaded On 2018-03-09

How many significant digits? - PPT Presentation

5700 1 2 3 4 Multiply 8435 21103 178003805 1780 x 10 8 1780 x 10 7 17800000 Which of the following instruments would give you the most accurate measurement Round to 3 significant digits ID: 643971

significant digits good precision digits significant precision good accuracy measurement liter increments cylinder gallons number graduated count 100 length

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Slide1

How many significant digits?5700

1

2

3

4Slide2

Multiply843.5 * 21103

17800380.5

1.780 x 10

8

1.780 x 10

7

17800000Slide3

Which of the following instruments would give you the most accurate measurement?Slide4

Round to 3 significant digits.861900000000

862

86200000000

8.62 x 10

-11

8.62 x 10

11Slide5

What is the correct way to convert 5.00 gallons to mL?

A.

5.00

gallons

4

qt 1000

mL

=

1

gallon 1 Liter

B.

5.00

gallons

4

qt

1 Liter 1000

mL

=

1

gallon 1.06

qt 1

Liter

C.

5.00 gallons 4 qt 1.06 Liters 1000

mL

=

1

gallon 1 qt 1 LiterSlide6

How many significant digits?0.013020

4

5

6

7Slide7

Multiply85 * 1.33

113.05

113

110

110.Slide8

How many significant digits?3703

1

2

3

4Slide9

A student measured the length of an object four times and got the following measurements: 3.52 cm, 3.48 cm, 3.52 cm, and 3.52 cm. The teacher told the students that the accepted value for the length was 3.70 cm. How was the student’s accuracy and precision?

A. Very

good accuracy and very good precision

B. Not

very good accuracy and very poor precision

C. Not

very good accuracy and very good precision

D. Very

good accuracy and very poor precisionSlide10

Round to 3 significant digits.34592

345

34500

34600

3.45 x 10

4Slide11

In a multiplication or division problem, the first step is counting

Significant digits

Decimal places

Zeros

Non-zero digitsSlide12

How many significant digits?0.0035

2

3

4

5Slide13

Which of the following will allow measurement of a liquid’s volume with the greatest accuracy and precision?

A. 50

mL

graduated cylinder with 1

mL

increments

B. 100

mL

graduated cylinder with 0.5

mL

increments

C. 100

mL

graduated cylinder in 10

mL

increments

D. 200

mL

graduated cylinder in 5

mL

incrementsSlide14

Using a ruler that has divisions which mark every mm, which of the following would be an appropriately recorded length?

A. 45.02 mm

B. 45 mm

C. 45.020 mm

D. 45.0

mmSlide15

Round to 3 significant digits.0.0000485421

485

0.0000485

4.85 x 10

5

4.85 x 10

-10Slide16

In an addition or subtraction problem, what is the first step in determining how the answer should be reported?

A. count

the number of significant digits in each

measurement

B. count

the number of decimal places in each

measurement

C. count

the number of zeroes in each

measurement

D. count

the number of non-zeroes in each measurementSlide17

How many significant digits?2.0050

2

3

4

5Slide18

Which of the following numbers have three significant digits? 1) 1,050

2) 1,150

3) 0.005

4) 1,050,100

A. 1

and 2

B. 1

, 2, and 4

C. 2

and

4

D. 1

, 2, 3, and 4Slide19

Multiply6 * 1234

7

7000

740

7404Slide20

The answers to which of the following will have three significant digits? 1.) (6.022) x (2.61)

2. 6.314 + 6.94 + 2.6501

3. (9.42 + 1.62) / 4.1

4. 485 / 9.231

A. 1

and

2

B. 3

and

4

C.1

, 2, and

4

D. 1

and 4