G6 U1 Assessment Key
Grade 6 Unit 1 Assessment The Number System
Answer Key *All answers are worth 1 point unless otherwise noted* 1.
A
2.
6.NS.3 6.
A
B
3.
6.NS.3 7.
B
B
4.
6.NS.3 8.
C
C
5.
6.NS.3 9.
D 6.NS.3
D
10.
A, B, D
Two or fewer correct responses = 0 points All three correct responses = 1 point
6.NS.1 11.
C, D
6.NS.4 12.
B, C
6.NS.3 13.
A, B
6.NS.4 14.
6.NS.3
C
15.
One or zero correct responses = 0 points
One or zero correct responses = 0 points
One or zero correct responses = 0 points
Incorrect response = 0 points
Both correct responses = 1 point
Both correct responses = 1 point
Both correct responses = 1 point
Correct response = /5 point
6.NS.3
6.NS.4
6.NS.3
1
6.NS.3
Copyright © Swun Math Grade 6 Unit 1 Assessment (Answer Key) Page 1
E
Incorrect response = 0 points 1
Correct response = /5 point
6.NS.3
16.
D
17.
Incorrect response = 0 points 1
Correct response = /5 point
18.
Incorrect response = 0 points 1
Correct response = /5 point
6.NS.3 21.
B
231
19.
Incorrect response = 0 points 1
Correct response = /5 point
6.NS.3 22.
A
23.
1.2 1 0.2 0.6 0.4 0.12
All six correct responses = 1 point
Correct response = 1 point
6.NS.3 1
/12 of the sandwich
Incorrect response = 0 points
Incorrect response = 0 points
Correct response = 1 point
Correct response = 1 point
Correct response = 1 point
6.NS.1
The decimal goes between the 6 and 7. 26.78
Incorrect response = 0 points
Incorrect response = 0 points
6.NS.2
20.
Five or fewer correct responses = 0 points
6.NS.3
Models may vary. Sample model:
a. b. c. d. e. f.
6.NS.1
Copyright © Swun Math Grade 6 Unit 1 Assessment (Answer Key) Page 2
6.NS.3 24.
9
/10
Incorrect response = 0 points Correct response = 1 point
6.NS.1
Question: 25. a. Student gives the correct answer and shows work: 144 hot dogs and buns b. Student gives an accurate explanation: The operations that were important in finding my answer were division and multiplication. I used the ladder to find the common prime numbers, then multiplied all the prime numbers with the remaining factors to find the LCM c. Student gives an accurate explanation: The process for finding the solutions to question 1 and 2 were similar because I used the ladder to find the GCF and the LCM. This ladder model works the same for finding the LCM and GCF because it helps extract all the common prime numbers. Where the process is different is at the end when it is time to multiply the common prime factors. To find the GCF, you only multiply the prime factors along the left side of the ladder. To find the LCM, you multiply all the prime factors along the “L” shape formed by the ladder. 6.NS.4 26. a. Student gives the correct answer and shows work: $102.00 b. Student gives the correct answer: $69.09 c. Student gives an accurate explanation: In order to find the solutions for each part, I used both multiplication and addition. For part A, I multiplied to find the price for each type of ticket, and then added them together to get the total price. For part B, I also use multiplication to find the price for each type of meal, plus the price for all of the drinks. Then I added to find the grand total. d. Student gives the correct answer and an accurate explanation: The most expensive part of the trip to the zoo was admission. Just to get in the zoo, it cost $102, which is more than the $69.09 they spent on lunch. 6.NS.3 27. a. Student gives the correct answer and shows work: There are 14.19 liters of milk in the walk-in refrigerator. b. Student gives the correct answer and shows work: 66 milk drinks can be made before the dairy runs out of milk for the day. c. Student gives the correct answer and shows work: 15 take-home bottles of strawberry milk could be made before the dairy runs out of milk for the day. d. Student gives an accurate explanation: Sample explanation: In part a, I was asked to find how much milk there was all together. I was given the volume of each container, and the fact that three jugs were full, and the fourth jug was ¾ full. To find the total amount of milk, I needed to multiply. In part b, I was asked to find how many drinks could be made from the total amount of available milk. This required me to create individual portions from the whole, which meant I needed to divide. 6.NS.3
Copyright © Swun Math Grade 6 Unit 1 Assessment (Answer Key) Page 3
Points 0.5 0.5
1
0.25 0.25 1
0.5
0.25 0.25 1
0.5
Answer Key *All answers are worth 1 point unless otherwise noted* 1.
A
2.
6.NS.3 6.
A
B
3.
6.NS.3 7.
B
B
4.
6.NS.3 8.
C
C
5.
6.NS.3 9.
D 6.NS.3
D
10.
A, B, D
Two or fewer correct responses = 0 points All three correct responses = 1 point
6.NS.1 11.
C, D
6.NS.4 12.
B, C
6.NS.3 13.
A, B
6.NS.4 14.
6.NS.3
C
15.
One or zero correct responses = 0 points
One or zero correct responses = 0 points
One or zero correct responses = 0 points
Incorrect response = 0 points
Both correct responses = 1 point
Both correct responses = 1 point
Both correct responses = 1 point
Correct response = /5 point
6.NS.3
6.NS.4
6.NS.3
1
6.NS.3
Copyright © Swun Math Grade 6 Unit 1 Assessment (Answer Key) Page 1
E
Incorrect response = 0 points 1
Correct response = /5 point
6.NS.3
16.
D
17.
Incorrect response = 0 points 1
Correct response = /5 point
18.
Incorrect response = 0 points 1
Correct response = /5 point
6.NS.3 21.
B
231
19.
Incorrect response = 0 points 1
Correct response = /5 point
6.NS.3 22.
A
23.
1.2 1 0.2 0.6 0.4 0.12
All six correct responses = 1 point
Correct response = 1 point
6.NS.3 1
/12 of the sandwich
Incorrect response = 0 points
Incorrect response = 0 points
Correct response = 1 point
Correct response = 1 point
Correct response = 1 point
6.NS.1
The decimal goes between the 6 and 7. 26.78
Incorrect response = 0 points
Incorrect response = 0 points
6.NS.2
20.
Five or fewer correct responses = 0 points
6.NS.3
Models may vary. Sample model:
a. b. c. d. e. f.
6.NS.1
Copyright © Swun Math Grade 6 Unit 1 Assessment (Answer Key) Page 2
6.NS.3 24.
9
/10
Incorrect response = 0 points Correct response = 1 point
6.NS.1
Question: 25. a. Student gives the correct answer and shows work: 144 hot dogs and buns b. Student gives an accurate explanation: The operations that were important in finding my answer were division and multiplication. I used the ladder to find the common prime numbers, then multiplied all the prime numbers with the remaining factors to find the LCM c. Student gives an accurate explanation: The process for finding the solutions to question 1 and 2 were similar because I used the ladder to find the GCF and the LCM. This ladder model works the same for finding the LCM and GCF because it helps extract all the common prime numbers. Where the process is different is at the end when it is time to multiply the common prime factors. To find the GCF, you only multiply the prime factors along the left side of the ladder. To find the LCM, you multiply all the prime factors along the “L” shape formed by the ladder. 6.NS.4 26. a. Student gives the correct answer and shows work: $102.00 b. Student gives the correct answer: $69.09 c. Student gives an accurate explanation: In order to find the solutions for each part, I used both multiplication and addition. For part A, I multiplied to find the price for each type of ticket, and then added them together to get the total price. For part B, I also use multiplication to find the price for each type of meal, plus the price for all of the drinks. Then I added to find the grand total. d. Student gives the correct answer and an accurate explanation: The most expensive part of the trip to the zoo was admission. Just to get in the zoo, it cost $102, which is more than the $69.09 they spent on lunch. 6.NS.3 27. a. Student gives the correct answer and shows work: There are 14.19 liters of milk in the walk-in refrigerator. b. Student gives the correct answer and shows work: 66 milk drinks can be made before the dairy runs out of milk for the day. c. Student gives the correct answer and shows work: 15 take-home bottles of strawberry milk could be made before the dairy runs out of milk for the day. d. Student gives an accurate explanation: Sample explanation: In part a, I was asked to find how much milk there was all together. I was given the volume of each container, and the fact that three jugs were full, and the fourth jug was ¾ full. To find the total amount of milk, I needed to multiply. In part b, I was asked to find how many drinks could be made from the total amount of available milk. This required me to create individual portions from the whole, which meant I needed to divide. 6.NS.3
Copyright © Swun Math Grade 6 Unit 1 Assessment (Answer Key) Page 3
Points 0.5 0.5
1
0.25 0.25 1
0.5
0.25 0.25 1
0.5
