Test 4 , Units 3.1 - 4.15

Question 1

___g = 1 kg

Answer 1

1000

Question 2

___ cm = 1 m

Answer 2

100

Question 3

___ mm = 1 dm

Answer 3

100

Question 4

___ mi. = 5 km

Answer 4

1 mi = .62 km

.62 x 5 = 3.1

Question 5

___ lb. = 500 kg

Answer 5

1 lb = 2.2 kg

2.2 x 500 = 1100

Question 6

___ m = 19 yd.

Answer 6

1 m = .91 yd

.91 x 19 = 17.29 = 17.3

Question 7

freezing point of water - F

Answer 7

32 F

Question 8

freezing point of water - Celsius

Answer 8

0 C

Question 9

boiling point of water - F

Answer 9

212 F

Question 10

boiling point of water - Celsius

Answer 10

100 C

Question 11

___ C = 55 F

Answer 11

C = 5/9(F - 32)

C = 5/9(55 - 32)

C = 5/9(23)

C = 115/9

C = 12.7

C = 13

Question 12

___ F = 25C

Answer 12

F = 9/5C + 32

F = 9/5(25) + 32

F = 45 + 32

F = 77

Question 13

___C = 99F

Answer 13

C = 5/9(F - 32)

C = 5/9(99 - 32)

C = 5/9(67)

C = 335/9

C = 37.2 = 37

Question 14

what is the numerical coefficient of 3axy

Answer 14

3

Question 15

write the number of terms in a trinomial

Answer 15

3

Question 16

write six less than x as an algebraic expression

Answer 16

x - 6

Question 17

solve 3² (2 + 5) - 6

Answer 17

9 (7) - 6

63 - 6

57

Question 18

identify as like or unlike terms: 4x²y ; 4xy²

Answer 18

unlike

Question 19

write the exponent in 5³

Answer 19

3

Question 20

solve 5⁰

Answer 20

1

Question 21

solve y¹

Answer 21

y

Question 22

if a = 5, b = 4, c = 2

abc²

Answer 22

5 * 4 * 2²

20 * 4

80

Question 23

if a = 5, b = 4, c = 2

b(a + c)

Answer 23

4(5 + 2)

4 (7)

28

Question 24

if a = 5, b = 4, c = 2

ac² - b/2

Answer 24

5(2²) - 4/2

5(4) - 2

20 - 2

18

Question 25

3m + 6m + 2m

Answer 25

11m

Question 26

12x² + 3xy - x² + y²

Answer 26

11x² + 3xy + y²

Question 27

9n + 4n + n

Answer 27

14n

Question 28

(2x)(x²)

Answer 28

2x³

Question 29

(4x²)(2x)(3xy)

Answer 29

24x⁴y

Question 30

(m²)(m⁴)(m)

Answer 30

m⁷

Question 31

x⁴ / x³

Answer 31

x

Question 32

12a²bc / 4abc

Answer 32

3a

Question 33

20mn² / 5m²n²

Answer 33

4/m

Question 34

x + 2 = 9

Answer 34

x + 2 - 2 = 9 - 2

x = 7

Question 35

3x = 18

Answer 35

x = 6

Question 36

1/2x = 7

Answer 36

2 * 1/2x = 7 * 2

x = 14

Question 37

4x + 3 = 2x + 9

Answer 37

4x - 2x + 3 = 2x - 2x + 9

2x + 3 - 3 = 9 - 3

2x/2 = 6/2

x = 3

Question 38

.5x = 10

Answer 38

5x = 100

x = 20

Question 39

2/3x = 6

Answer 39

3/2 * 2/3x = 6 * 3/2

x = 18/2

x = 9

Question 40

2 * 2 * a * a * b * b

Answer 40

4a²b²

Question 41

5xxxyyyy

Answer 41

5x³y⁴

Question 42

8 * 8 * 8 * m * m * n

Answer 42

512m²n

Question 43

Cara traveled at the average rate of 52 mph on her trip. How many kilometers per hour was she traveling? Find the answer to the nearest whole kilometer.

Answer 43

1 mi. = 1.61 km

1.61 x 52 = 83.72 = 84

Question 44

Cara filled up her car with 15 gallons of gas. How many liters did she buy? (convert 15 gal. to qt. first.)

Answer 44

15 gal x 4 = 60 qt.

1 qt. = .95 liters

.95 x 60 = 57

Question 45

The temperature when she arrived was 68 F. What was the temp on the Celsius scale?

Answer 45

C = 5/9 (F - 32)

C = 5/9 (68 - 32)

C = 5/9 ( 36)

C = 5 ( 4)

C = 20