Observation, Inference, or Measurement Ditto

1. Observation	4. Inference	7. Inference	10. Measurement	13. 3
2. Observation	5. Measurement	8. Inference	11. Inference	14. 4
3. Measurement	6. Observation	9. Measurement	12. 2	15. 3

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Scientific Notation Ditto

Part I: Go from Scientific Notation to regular numbers:

1. 100	6. 0.01	11. 0.001	16. 380	21. 367
2. 1,000	7. 0.00001	12. 400	17. 0.00000000038	22. 98.6
3. 100,000	8. 0.0000000001	13. 0.000005	18. 298	23. 98,600,000,000,000,000
4. 10,000,000,000	9. 1	14. 1,000	19. 0.02986	24. 12345.6
5. 0.1	10. 1,000	15. 0.001	20. 3.67	25. 1.23456

Part II: Go from regular numbers to Scientific Notation:

1. 10³ 2. 10^-3 3. 10⁰ 4. 10⁵ 5. 10⁷ 6. 10^-7 7. 10^-3 8. 10^-1 9. 10¹

(PLEASE NOTE: The rest of these could have more than one answer! These alternative answers will be noted with a letter after their number.)

10. A. 156 x 10⁰ 12. A. 211 x 10^-1 14. A. 0.654 x 10⁰ 16. A. 765 x 10⁶ 18. A. 60 x 10²¹

      B. 15.6 x 10¹       B. 21.1 x 10⁰       B. 6.54 x 10^-1       B. 76.5 x 10⁷       B. 6 x 10²²

      C. 1.56 x 10²       C. 2.11 x 10¹       C. 65.4 x 10^-2       C. 7.65 x 10⁸       C. 0.6 x 10²³

      D. 0.156 x 10³       D. 0.211 x 10²       D. 654 x 10^-3       D. 0.765 x 10⁹ 19. A. 0.56 x 10^-17

11. A. 0.633 x 10⁰ 13. A. 123 x 10⁰ 15. A. 0.1234 x 10² 17. A. 1230 x 10¹⁵       B. 5.6 x 10^-18

      B. 6.33 x 10^-1       B. 12.3 x 10¹       B. 1.234 x 10¹       B. 123 x 10¹⁶       C. 56 x 10^-19

      C. 63.3 x 10^-2       C. 1.23 x 10²       C. 12.34 x 10⁰       C. 12.3 x 10¹⁷ 20. A. 0.12 x 10^-24

      D. 633 x 10^-3       D. 0.123 x 10³       D. 123.4 x 10^-1       D. 1.23 x 10¹⁸       B. 1.2 x 10^-25

      E. 1234 x 10^-2       E. 0.123 x 10¹⁹       C. 12 x 10^-26

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Metric System Ditto

1. I - Length
2. E - Meter
3. K - Meter stick
4. G - Liter
5. B - Volume
6. F - Kilogram
7. C - Mass
8. D - Density
9. H - Second
10. J - Balance
11. A - Time
12. M - Celsius
13. L - Thermometer
14. Celsius degree and Kelvin - Both SI units used to measure temperature.
15. Balance and Mass - The balance is an instrument used to measure mass.
16. Liter and Cubic centimeter - Both are SI units to used measure volume.
17. Time and Second - The second is an unit of time.
18. Decimeter and Kilometer - Both are SI units used to measure length (or distance).

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Measuring Ditto

Please Note: The answers below could be slightly different from the answers that you got. This is because of estimating the last number past the last given line. In estimating, your number may be slightly higher or lower. Double check your answers if it is different from here.

1. a) 47.52 b) 129.07

2. a) 12.5 b) 11.3 c) 13.26 d) 13.95 e) 10.3

    f) 12.0 g) 9.71 h) 12.96 i) 14.34 j) 11.72

3. a) 67.4 b) 32.2 c) 81.0 d) 47.8 e) 2.7

     f) 64.0 g) 30.75 h) 84.2 i) 49.7 j) 3.1

4. a) -2.5° b) 37.88° c) 8.1° d) 86.5° e) -10.5°

     f) 34.5°

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Density Ditto

1. 0.196 g/100 mL = 0.00196 g/mL
2. 3.0 cm x 3.0 cm x 3.0 cm = 27.0 cm³, 27 g/27.0 cm³ = 1 g/cm³
3. 7.0 mL - 2.0 mL = 5.0 mL, 25 g/5.0 mL = 5 g/mL
4. 89.6 g/10.0 cm³ = 8.96 g/cm³
5. m=dv: m_silver = 10.5 g/cm³ x 5 cm³ = 52.5 g
                m_gold   = 19.3 g/cm³ x 5 cm³ = 96.5 g
Answer: Gold.
6. Ethanol   = 3.9 g/5 mL = 19.5 g/mL
    Benzene = 4.4 g/5 mL = 22.0 g/mL
Answer = Benzene.
7. 2 cm x 3 cm x 2 cm = 12 cm³, 94 g/12 cm³ = 7.833333333333... g/cm³

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Density Drill Ditto

A. 1. 152.2 g
      2. 12 cm³
      3. 152.2 g/12cm³ = 12.68333... g/cm³
      4. a) 12.68333... g/cm³ b) 12.68333... g/cm³   c) 12.68333... g/cm³
B. 1. 125 g
      2. 300 ml - 250 mL = 50 mL
      3. 125 g/50 mL = 2.5 g/mL
C. 1.   44.0 g
      2. 55.5 g/cm³
      3. 0.79279279279279279279279279279279... cm³
      4. 0.92552161193343 cm
D. 1. 1.4 g/mL
      2. 90 mL - 65 mL = 25 mL
      3. 1.4 g/mL x 25 mL = 35 g

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Percentage Error/ Percent Deviation Ditto

Front Page:
1. 10 g - 9 g = 1 g, 1 g/9 g = 0.11111..., 0.111111.... x 100% = 11.111....% = 11%
2. 15 g - 12 g = 3 g, 3 g/15 g = 0.2, 20 x 100% = 20%

Back Page:
1. 173 g - 156 g = 17 g, 17 g/173 g = 0.0982658, x 100% = 9.82658% = 10% = Choice: (3)
2. 0.50 g - 0.40 g = 0.1 g, 0.1 g/0.5 g = 0.2, 0.2 x 100% = 20% = Choice: (3)
3. 12 g - 10 g = 2 g, 2 g/12 g = 0.16666..., 0.16666... x 100% = 16.6666...% = 16.7% = Choice: (1)
4. 200 g - 196 g = 4 g, 4 g/200 g = 0.02, 0.02 x 100% = 2.0% = Choice: (2)
5. 0.90 g - 0.80 g = 0.1 g, 0.1 g/0.9 g = 0.1111..., 0.1111... x 100% = 11.11...% = 11% = Choice: (2)

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Reading Graphs Dittos

"Evening Hours"

A. 10	B. 15	C. 41 to 60 minutes	D. 20%
E. 30/100 = 3/10	F. 0-20 = 10, 21-40 = 20, 41-60 = 30, so: 10+20+30 = 60	G. 61-80 = 25, 81+ = 15, so: 25+15=40, 40/100= 40%	H. 61-80=25, and 0-20=10, so: 25-10= 15 students.

"Minutes Practiced"
Part I:

1. Wednesday 2. 60+0+80+0+60+20+0= 220 hours 3. 4

Part II:

1. Hoopers 2. Dunkers (6 vs. 4) 3. H: 220 hours
D: 40+60+40+60+40+60 = 300

"Book Sense"

A. 30+40+25+60+55= 210 D. April and May G. (40/210) x 100% = 19.04761...%
= 19%

B. 30 x 5 = 150, 210-150= 60 books E. 210(books) x 200 (pages per book) = 42,000 H. (25/210) x 100% = 11.90476...%
= 12%

C. 210/5 (months)= 42 F. 30 x 12 = 360 I. 12%30/210 = 3/21 = 1/7

"Taking Care of Baby"

A. Rebecca C. 12/4 = 3 hrs E. Celine G. $70 I. Week 1 = $15, $15/$60 = 0.25,
0.25 x 100% = 25%

B. 12 hours D. Week 2 F. $10 H. Week 1 = 3 hrs, 3/15 = 1/5

Pie Graph Exercise - "Sources of Air Pollution"

1. Transportation (42%) 2. Solid waste disposal (5%) 3. Transportation = 42%, 1,000 grams x 0.42
= 420 grams
420 grams x 3 (seconds)
= 1260 grams 4. Solid waste disposal = 5%, 1,000 grams x .05 = 50 grams 50 grams x 5 (seconds)
= 250 grams

5. 300 grams of air pollution, Transportation = 42%,
300 x 0.42 = 126 grams 6. 300 grams of air pollution, Forest fires = 8%,
300 x 0.08 = 24 grams 7. 300 grams of air pollution, Industrial processes = 14%, 300 x 0.14 = 42 grams 8. Miscellaneous.

Picture Graph Exercise - "Estimated Population of New York State"
1. 1990 = 18,000,000
2. 1790 = 250,000
3. 1930 = 12,500,000; 1910 = 9,125,000;
12,500,000 - 9,125,000 = 3,375,000 people
4. 1970 = 18,250,000; 1990 = 18,000,000; 18,250,000 - 18,000,000 = 250,000
5. Largest = 1970 = 18,250,000; Smallest = 1790 = 250,000; 18,250,000 - 250,000 = 18,000,000
6. 1,775,000

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10. A. 156 x 10⁰	12. A. 211 x 10^-1	14. A. 0.654 x 10⁰	16. A. 765 x 10⁶	18. A. 60 x 10²¹
B. 15.6 x 10¹	B. 21.1 x 10⁰	B. 6.54 x 10^-1	B. 76.5 x 10⁷	B. 6 x 10²²
C. 1.56 x 10²	C. 2.11 x 10¹	C. 65.4 x 10^-2	C. 7.65 x 10⁸	C. 0.6 x 10²³
D. 0.156 x 10³	D. 0.211 x 10²	D. 654 x 10^-3	D. 0.765 x 10⁹	19. A. 0.56 x 10^-17
11. A. 0.633 x 10⁰	13. A. 123 x 10⁰	15. A. 0.1234 x 10²	17. A. 1230 x 10¹⁵	B. 5.6 x 10^-18
B. 6.33 x 10^-1	B. 12.3 x 10¹	B. 1.234 x 10¹	B. 123 x 10¹⁶	C. 56 x 10^-19
C. 63.3 x 10^-2	C. 1.23 x 10²	C. 12.34 x 10⁰	C. 12.3 x 10¹⁷	20. A. 0.12 x 10^-24
D. 633 x 10^-3	D. 0.123 x 10³	D. 123.4 x 10^-1	D. 1.23 x 10¹⁸	B. 1.2 x 10^-25
		E. 1234 x 10^-2	E. 0.123 x 10¹⁹	C. 12 x 10^-26

1. a) 47.52	b) 129.07
2. a) 12.5	b) 11.3	c) 13.26	d) 13.95	e) 10.3
f) 12.0	g) 9.71	h) 12.96	i) 14.34	j) 11.72
3. a) 67.4	b) 32.2	c) 81.0	d) 47.8	e) 2.7
f) 64.0	g) 30.75	h) 84.2	i) 49.7	j) 3.1
4. a) -2.5°	b) 37.88°	c) 8.1°	d) 86.5°	e) -10.5°
f) 34.5°

A. 30+40+25+60+55= 210	D. April and May	G. (40/210) x 100% = 19.04761...% = 19%
B. 30 x 5 = 150, 210-150= 60 books	E. 210(books) x 200 (pages per book) = 42,000	H. (25/210) x 100% = 11.90476...% = 12%
C. 210/5 (months)= 42	F. 30 x 12 = 360	I. 12%30/210 = 3/21 = 1/7

A. Rebecca	C. 12/4 = 3 hrs	E. Celine	G. $70	I. Week 1 = $15, $15/$60 = 0.25, 0.25 x 100% = 25%
B. 12 hours	D. Week 2	F. $10	H. Week 1 = 3 hrs, 3/15 = 1/5

1. Transportation (42%)	2. Solid waste disposal (5%)	3. Transportation = 42%, 1,000 grams x 0.42 = 420 grams 420 grams x 3 (seconds) = 1260 grams	4. Solid waste disposal = 5%, 1,000 grams x .05 = 50 grams 50 grams x 5 (seconds) = 250 grams
5. 300 grams of air pollution, Transportation = 42%, 300 x 0.42 = 126 grams	6. 300 grams of air pollution, Forest fires = 8%, 300 x 0.08 = 24 grams	7. 300 grams of air pollution, Industrial processes = 14%, 300 x 0.14 = 42 grams	8. Miscellaneous.