G6 U2 Assessment
Name: _____________________________________ Date:____________
Grade 6 Unit 2 Assessment Rational Numbers 1. The deep sea diver rested at 75 feet below sea level. How is the depth’s absolute value represented? A
│75│ feet
B
│+75│ feet
C
–75 feet
D
│–75│ feet
2. Which point is the opposite of –30°?
A
H
B
I
C
J
D
K
H
●
I
●
J
●
K
●
3. What is the electric charge of an atom with 8 electrons and 8 protons?
A
–8
B
+8
C
Copyright © Swun Math Grade 6 Unit 2 Assessment, Page 1
0
D
+16
4. Which integer represents a credit of $54.15?
A
–$54.15
B
+$54.15
C
+$45.15
D
|–$45.15|
5. Compare the rational numbers. 5.74 –8.25 A
C
=
D
≤
6. What is the value of –(–2.4)?
A
–2.4
B
0
C
2.4
D
4.8
Copyright © Swun Math Grade 6 Unit 2 Assessment, Page 2
7. Which points correspond to –1, –(–1/2), –1/4, and 7/8 on the number line? L M
● ●
A
L, Q, P, R
N
●
B
R, Q, O, N
O
●
C
L, N, O, M
P
D
R, N, P, M
Q
● ●
R
●
8.
Place the absolute values in order from least to greatest. |2| |–8|
A
2, 10, 3, 8
B
3, 8, 2, 10
C
10, 2, 8, 3
D
2, 3, 8, 10
|–3| |10|
Copyright © Swun Math Grade 6 Unit 2 Assessment, Page 3
9.
The following table below shows the temperature in the desert during a 24 hour period. Which temperature is the warmest? 6:00am 12:00pm 6:00pm 12:00am –5°F 60°F 34°F –54°F A
–5°F
B
60°F
C
34°F
D
–54°F
10.
The temperature in the blizzard yesterday was 5°F below zero. Today it is 2°F below zero. How much warmer is it today?
A
5°F
B
3°F
C
–7°F
D
–2°F
11. Evaluate the following statements and determine whether they are true or false. Bubble the letter of the true statements. A
|–10| < |10|
B
–10 and +10 are the same distance from zero.
C
10 is the opposite of –10
D
The opposite of the opposite of 10 is –10.
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12.
Evaluate each statement and determine whether it is true or false. Bubble the letter of the true statements. A
3 electrons and 2 protons have an electric charge of –1.
B
250 feet above sea level = +250
C
83 degrees above zero = –83°
D
earned 1500 points = +1500
13.
An aluminum ion has 10 electrons and 13 protons. Which of the following statements must be true? Bubble the letter of the true statements. A
The ion has an electrical charge of +3.
B
The ion has an electrical charge of -3.
C
The opposite charge is -3.
D
The opposite charge is +3.
Copyright © Swun Math Grade 6 Unit 2 Assessment, Page 5
14. Sort the values into their correct position in the chart. 0
i. neutral j. 6 protons and 2 electrons k. ¼ mile above sea level l. sea level m. –(–(–1/2)) n. 2° warmer than zero o. 12 less than 5
15. Burt owes his brother $15. Find the value on the number line.
How much is Burt’s debt?
Copyright © Swun Math Grade 6 Unit 2 Assessment, Page 6
16.
Write the symbol that makes the inequality true.
a. –2 –5
_____
b. |–10| 10
_____
c. –6 –3
_____
d. –(–13) –14
_____
17. Write the absolute values in order from greatest to least. |14| |–25|
18.
|–6| |100|
A scene in an action movie has the following elements. Find and label them on the number line. Point V The villain’s submarine is sitting 0.60 km below sea level. Point P A commercial airliner gaining altitude after take-off is 2.8 km above sea level. Point M A man is screaming for help from a raft floating in the ocean. Point H The hero’s biplane, zooming to help the stranded man, is 1.4 km above sea level. Point S Sharks are 0.2 km below the surface of the water, and they just noticed the man’s raft. Copyright © Swun Math Grade 6 Unit 2 Assessment, Page 7
19.
A water lily’s roots are anchored in the mud 28½ inches underwater. The top of the blossom is 2¾ inches above the surface. What is the total length of the plant? -
20.
Fill in a single digit to make the sentences true. a.
-2.97 > -2.9_____
b.
4.44 > 4.4_____
c.
-0.22 < -0.2_____
Copyright © Swun Math Grade 6 Unit 2 Assessment, Page 8
21.
Marianne and her dad are going on a scuba diving trip. They leave their house, which is at 45 feet above sea level, and head out to the dock to board the boat, which is at sea level. Once they are ready, they head out to sea, anchor the boat, and dive 20 feet below sea level. a. Represent the different elevations of their trip with a visual model.
b. Explain the meaning of your model. What does your model show about the differences between the family’s highest and lowest elevations during their trip?
Copyright © Swun Math Grade 6 Unit 2 Assessment, Page 9
22.
Veronica tracked the growth of her cousins over the previous six months. The table below shows each child’s growth in inches. a. In the space provided, create a number line and label the growth of each cousin. Child’s Name Stacy Patrick Ronald Jesse Sam
Growth (in) 2 1.25 1.75 2.25 0.5
b. Write an inequality that compares the growth of Stacy and Sam.
c. Write an inequality that compares the growth of Stacy and Jesse.
d. Which child had the greatest growth? Is it possible for that person’s growth to be the opposite in the next six months? Explain your reasoning.
Copyright © Swun Math Grade 6 Unit 2 Assessment, Page 10
23.
Mark solved the following problem. Analyze his work and identify any mistakes he may have made in finding the solution. If there are mistakes, correct them and find the accurate answer. The temperature was 16°F below zero on Sunday night. Today the temperature is 5°F below zero. Which temperature is warmer? Mark’s Answer: ‒16°F > ‒5°F; ‒16°F is warmer than ‒5°F
Copyright © Swun Math Grade 6 Unit 2 Assessment, Page 11
Grade 6 Unit 2 Assessment Rational Numbers 1. The deep sea diver rested at 75 feet below sea level. How is the depth’s absolute value represented? A
│75│ feet
B
│+75│ feet
C
–75 feet
D
│–75│ feet
2. Which point is the opposite of –30°?
A
H
B
I
C
J
D
K
H
●
I
●
J
●
K
●
3. What is the electric charge of an atom with 8 electrons and 8 protons?
A
–8
B
+8
C
Copyright © Swun Math Grade 6 Unit 2 Assessment, Page 1
0
D
+16
4. Which integer represents a credit of $54.15?
A
–$54.15
B
+$54.15
C
+$45.15
D
|–$45.15|
5. Compare the rational numbers. 5.74 –8.25 A
C
=
D
≤
6. What is the value of –(–2.4)?
A
–2.4
B
0
C
2.4
D
4.8
Copyright © Swun Math Grade 6 Unit 2 Assessment, Page 2
7. Which points correspond to –1, –(–1/2), –1/4, and 7/8 on the number line? L M
● ●
A
L, Q, P, R
N
●
B
R, Q, O, N
O
●
C
L, N, O, M
P
D
R, N, P, M
Q
● ●
R
●
8.
Place the absolute values in order from least to greatest. |2| |–8|
A
2, 10, 3, 8
B
3, 8, 2, 10
C
10, 2, 8, 3
D
2, 3, 8, 10
|–3| |10|
Copyright © Swun Math Grade 6 Unit 2 Assessment, Page 3
9.
The following table below shows the temperature in the desert during a 24 hour period. Which temperature is the warmest? 6:00am 12:00pm 6:00pm 12:00am –5°F 60°F 34°F –54°F A
–5°F
B
60°F
C
34°F
D
–54°F
10.
The temperature in the blizzard yesterday was 5°F below zero. Today it is 2°F below zero. How much warmer is it today?
A
5°F
B
3°F
C
–7°F
D
–2°F
11. Evaluate the following statements and determine whether they are true or false. Bubble the letter of the true statements. A
|–10| < |10|
B
–10 and +10 are the same distance from zero.
C
10 is the opposite of –10
D
The opposite of the opposite of 10 is –10.
Copyright © Swun Math Grade 6 Unit 2 Assessment, Page 4
12.
Evaluate each statement and determine whether it is true or false. Bubble the letter of the true statements. A
3 electrons and 2 protons have an electric charge of –1.
B
250 feet above sea level = +250
C
83 degrees above zero = –83°
D
earned 1500 points = +1500
13.
An aluminum ion has 10 electrons and 13 protons. Which of the following statements must be true? Bubble the letter of the true statements. A
The ion has an electrical charge of +3.
B
The ion has an electrical charge of -3.
C
The opposite charge is -3.
D
The opposite charge is +3.
Copyright © Swun Math Grade 6 Unit 2 Assessment, Page 5
14. Sort the values into their correct position in the chart. 0
i. neutral j. 6 protons and 2 electrons k. ¼ mile above sea level l. sea level m. –(–(–1/2)) n. 2° warmer than zero o. 12 less than 5
15. Burt owes his brother $15. Find the value on the number line.
How much is Burt’s debt?
Copyright © Swun Math Grade 6 Unit 2 Assessment, Page 6
16.
Write the symbol that makes the inequality true.
a. –2 –5
_____
b. |–10| 10
_____
c. –6 –3
_____
d. –(–13) –14
_____
17. Write the absolute values in order from greatest to least. |14| |–25|
18.
|–6| |100|
A scene in an action movie has the following elements. Find and label them on the number line. Point V The villain’s submarine is sitting 0.60 km below sea level. Point P A commercial airliner gaining altitude after take-off is 2.8 km above sea level. Point M A man is screaming for help from a raft floating in the ocean. Point H The hero’s biplane, zooming to help the stranded man, is 1.4 km above sea level. Point S Sharks are 0.2 km below the surface of the water, and they just noticed the man’s raft. Copyright © Swun Math Grade 6 Unit 2 Assessment, Page 7
19.
A water lily’s roots are anchored in the mud 28½ inches underwater. The top of the blossom is 2¾ inches above the surface. What is the total length of the plant? -
20.
Fill in a single digit to make the sentences true. a.
-2.97 > -2.9_____
b.
4.44 > 4.4_____
c.
-0.22 < -0.2_____
Copyright © Swun Math Grade 6 Unit 2 Assessment, Page 8
21.
Marianne and her dad are going on a scuba diving trip. They leave their house, which is at 45 feet above sea level, and head out to the dock to board the boat, which is at sea level. Once they are ready, they head out to sea, anchor the boat, and dive 20 feet below sea level. a. Represent the different elevations of their trip with a visual model.
b. Explain the meaning of your model. What does your model show about the differences between the family’s highest and lowest elevations during their trip?
Copyright © Swun Math Grade 6 Unit 2 Assessment, Page 9
22.
Veronica tracked the growth of her cousins over the previous six months. The table below shows each child’s growth in inches. a. In the space provided, create a number line and label the growth of each cousin. Child’s Name Stacy Patrick Ronald Jesse Sam
Growth (in) 2 1.25 1.75 2.25 0.5
b. Write an inequality that compares the growth of Stacy and Sam.
c. Write an inequality that compares the growth of Stacy and Jesse.
d. Which child had the greatest growth? Is it possible for that person’s growth to be the opposite in the next six months? Explain your reasoning.
Copyright © Swun Math Grade 6 Unit 2 Assessment, Page 10
23.
Mark solved the following problem. Analyze his work and identify any mistakes he may have made in finding the solution. If there are mistakes, correct them and find the accurate answer. The temperature was 16°F below zero on Sunday night. Today the temperature is 5°F below zero. Which temperature is warmer? Mark’s Answer: ‒16°F > ‒5°F; ‒16°F is warmer than ‒5°F
Copyright © Swun Math Grade 6 Unit 2 Assessment, Page 11
