Assessment Answers
Lesson 1
1. Tens
2. Ten thousands
3. Twelve million, eighty-nine thousand, five hundred twenty-six
4. Eight billion, two million, seventy-nine thousand, one hundred-twenty-three
5. 4 ∙ 4 ∙ 4 = 64
6. 52
7. 31
8. $713
9. 283 pounds
Lesson 2
1. 1, 2, 3, 4, 6, 8, 12, 24
2. 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60
3. Composite. It is divisible by 3.
4. Prime. It has no factors besides 1 and itself.
5.
6.
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Lesson 3
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Lesson 4
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Lesson 5
1. thousandths
2. Eight hundred twenty-three and twenty-nine thousandths
3a. 300
3b. 263.41
3c. 57.13
3d. 57.135
3e. 624
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6. 0.78
7. 11.29
8a. 7094.87, 7095
8b. 20.64, 21
9a. 5.23, 5.234, 5.3, 5.65
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10b. 20 barrettes
Lesson 6
1a. 0.60, 60%
1b.
1c.
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, 124%
, 0.16
2. 57.69
3. 0.0851
4. 192.31%
5a. 50% increase
5b. 68.92% decrease
6a. 78 people
6b. 81.18%
6c. $125
Lesson 7
1a.
1b.1 to 2
1c. 4:7,
3 feet
2 feet
2a. 30 miles in 1 hour
2b. 12 inches to 1 foot
2c. 2 men to 3 women
3a.60 miles per hour
3b. $4.17 per gallon
3c. 5.38 lbs. per square inch
4a. x = 1.67
4b. r = 15
4c. x = 40
5a. x = 24
5b. r = 13.33
5c. x = 40
6a. x = 0.38
6b. t = 56
6c. x = 0.84
7a. 5.16 hours
7b. 21 pounds
Lesson 8
1a. 6.43, 7, 7, 6
1b. 4.38, 4.5, 2 and 6, 5
2. $19.52
3a. 20 pounds
3b. 4 pounds per month
3c. 15 pounds
3d. 3 pounds per month
3e. Month 1
4. Chart
Category
Class Time
Amount in hours
15
Fraction of Week
15/168
Percent of Week
8.93%
Work
25
25/168
14.88%
Sleep
56
56/168
33.33%
Study
30
30/168
17.86%
Travel
4
4/168
2.38%
Remaining
38
38
22.62%
Total
168
168/168
100%
4a. 480 hours
4b. 8 hours
4c. 18 hours, 10.71%
Lesson 9
1. 80 oz.
2. 17,160 ft.
3. 13,680 minutes
4. 234 inches
5. 1 year 9 months
6. 6 hours 16 minutes
7. 6 lb. 5 oz.
8. 6700 m
9. 4 mm
10a. 3539 km
10b. 19,661 m per day
10c. 0.50 meters per second 1.67 feet per second
Lesson 10
1. 116 inches
2. 25.12 meters
3. 41.7 feet
4. 1.56 square meters
5. 12.28 square feet
6. 7 times
7. 10 feet, 25 feet by 4 feet, 50 feet by 2 feet and 100 feet by 1 foot are the whole number
answers
Lesson 11
1a. 197.82 m³
1b. 364 ft³
1c. 33.49 ft³
2. a = 8.6 cm b = 8.6 cm
3a. between 8 and 9, 8.54
3b. between 5 and 6, 5.10
3c. between 7 and 8, 7.21
3d. between 10 and 11, 10.49
4a. 5 ft.
4b. 6.7 m
5a. Mercury: 60.8 cm³ Jupiter: 1,529,821.4 cm³
5b. 25.44 feet
5c. 14.1 cm
Lesson 12
2
1
2
1
1 2
1
1. − 2, − 1 , − 1 , − 1, − , − , 0, , , 1, 1
3
3
3
3
3 3
3
1
12
3
2. − 3.67, − 3 , − , − 0.65, −
3
5
5
3a. +8 feet
3b. −15 feet
3c. −18 degrees
4a. 7
4b. 7
4c. −9
5a. −5
5b. 11
5c. − 12
3
5
6a. 36
6b. −16
6c. 94
7a. −16
7b. 16
7c. −16
8a.
1
11
8b. −88
9a. Total Column: +2, −13, −5, −13, −1 Total Row: −3, −2, −6, −9, −5, −5
9b. Week 4
9c. Frank and Sara
9d. −
1
pounds per week 9e. 7 pounds
6