G5 U2 Assessment Key
Grade 5 Unit 2 Assessment Multiplication and Division of Whole Numbers
Answer Key 1.
B
2.
D
5.OA.2 6.
B
5.OA.1 7.
B
5.NBT.5
11.
B, C, D
3.
8.
B
4.
5.NBT.5
5.NBT.6
12.
D
B
27
9.
Incorrect response = 0 points
Three correct response = 1 point
Correct response = 1 point
5.OA.2
5.NBT.6
C
14.
584 Check work
C 5.NBT.5
10.
5.NBT.5
Check work Two or fewer correct responses = 0 points
5.
5.OA.2
5.NBT.6
13.
C
A 5.NBT.5
15.
89 Check work
Incorrect response and/or inaccurate/incomplete model = 0 points
Incorrect response and/or inaccurate/incomplete model = 0 points
Incorrect response and/or inaccurate/incomplete model = 0 points
Correct response and accurate model = 1 point
Correct response and accurate model = 1 point
Correct response and accurate model = 1 point
5.NBT.6
5.NBT.6
5.NBT.6
Copyright © Swun Math Grade 5 Unit 2 Assessment (Answer Key) Page 1
16. 12
17.
See chart below
Check work
18.
84
19.
Check work
6; Sentences 20. may vary. Sample sentence: Divide the sum of 13 and 11 by 4.
Explanations and proofs may vary. Sample explanation: B is 4 times greater than A. Sample proof: A: ●●●●●●●
●●●
B: ●●●●●●● ●●●●●●● ●●●●●●● ●●●●●●●
Incorrect response and/or inaccurate/incomplete model = 0 points
Five or fewer correct responses = 0 points All six correct responses = 1 point
Incorrect response and/or inaccurate/incomplete model = 0 points
Incorrect answer and/or inaccurate/incomplete sentence = 0 points
Correct response and accurate model = 1 point
Correct answer and accurate sentence = 1 point
5.OA.1
5.NBT.6
5.OA.2
Less than 24
Equal to 24
Greater than 24
(6 × 4) ÷ 2
2 (2 × 6)
4 + (4 × 6)
(8 × 6) ÷ 3
(3 × 6) + (12 ÷ 2)
(3 × 12) – 10
Correct response and accurate model = 1 point
5.NBT.6
Chart for #17.
Copyright © Swun Math Grade 5 Unit 2 Assessment (Answer Key) Page 2
●●● ●●● ●●● ●●●
Inaccurate/incomplete explanation and/or inaccurate/incomplete proof = 0 points Accurate explanation and accurate proof = 1 point
5.OA.2
Question 21. a. Student gives correct answer: (3 + 5) × $4 b. Student gives correct answer and shows work: $32 c. Student gives an accurate explanation: Sample explanation: A useful rule to use when solving the expression was the Order of Operations. This rule was useful because it tells which parts of the equation are to be solved first. In this case the operation in the parenthesis was solved first and then multiplication as stated in the Order of Operations rule. 5.OA.1 22. a. Student gives correct answer and shows work: 26,780; Check student work for accuracy. Correct solution using Distributive Property (5.NBT.6) Correct solution using standard algorithm (5.NBT.5) b. Student gives an accurate explanation: Sample explanation: Understanding the Distributive Property can help me understand what is going on in the standard algorithm because I am breaking down each number to its expanded form and distributing the values through multiplication. 5.NBT.5 23. a. Student gives an accurate explanation: The incorrect statement is C. It is incorrect because four crates cannot hold 45 boxes of rocks according to the quantity given in the problem. b. Student gives correct answer: Four crates can hold 40 boxes of rocks. 5.NBT.6
Copyright © Swun Math Grade 5 Unit 2 Assessment (Answer Key) Page 3
Points 0.5 0.5 1
0.5 0.5 1
1
1
Answer Key 1.
B
2.
D
5.OA.2 6.
B
5.OA.1 7.
B
5.NBT.5
11.
B, C, D
3.
8.
B
4.
5.NBT.5
5.NBT.6
12.
D
B
27
9.
Incorrect response = 0 points
Three correct response = 1 point
Correct response = 1 point
5.OA.2
5.NBT.6
C
14.
584 Check work
C 5.NBT.5
10.
5.NBT.5
Check work Two or fewer correct responses = 0 points
5.
5.OA.2
5.NBT.6
13.
C
A 5.NBT.5
15.
89 Check work
Incorrect response and/or inaccurate/incomplete model = 0 points
Incorrect response and/or inaccurate/incomplete model = 0 points
Incorrect response and/or inaccurate/incomplete model = 0 points
Correct response and accurate model = 1 point
Correct response and accurate model = 1 point
Correct response and accurate model = 1 point
5.NBT.6
5.NBT.6
5.NBT.6
Copyright © Swun Math Grade 5 Unit 2 Assessment (Answer Key) Page 1
16. 12
17.
See chart below
Check work
18.
84
19.
Check work
6; Sentences 20. may vary. Sample sentence: Divide the sum of 13 and 11 by 4.
Explanations and proofs may vary. Sample explanation: B is 4 times greater than A. Sample proof: A: ●●●●●●●
●●●
B: ●●●●●●● ●●●●●●● ●●●●●●● ●●●●●●●
Incorrect response and/or inaccurate/incomplete model = 0 points
Five or fewer correct responses = 0 points All six correct responses = 1 point
Incorrect response and/or inaccurate/incomplete model = 0 points
Incorrect answer and/or inaccurate/incomplete sentence = 0 points
Correct response and accurate model = 1 point
Correct answer and accurate sentence = 1 point
5.OA.1
5.NBT.6
5.OA.2
Less than 24
Equal to 24
Greater than 24
(6 × 4) ÷ 2
2 (2 × 6)
4 + (4 × 6)
(8 × 6) ÷ 3
(3 × 6) + (12 ÷ 2)
(3 × 12) – 10
Correct response and accurate model = 1 point
5.NBT.6
Chart for #17.
Copyright © Swun Math Grade 5 Unit 2 Assessment (Answer Key) Page 2
●●● ●●● ●●● ●●●
Inaccurate/incomplete explanation and/or inaccurate/incomplete proof = 0 points Accurate explanation and accurate proof = 1 point
5.OA.2
Question 21. a. Student gives correct answer: (3 + 5) × $4 b. Student gives correct answer and shows work: $32 c. Student gives an accurate explanation: Sample explanation: A useful rule to use when solving the expression was the Order of Operations. This rule was useful because it tells which parts of the equation are to be solved first. In this case the operation in the parenthesis was solved first and then multiplication as stated in the Order of Operations rule. 5.OA.1 22. a. Student gives correct answer and shows work: 26,780; Check student work for accuracy. Correct solution using Distributive Property (5.NBT.6) Correct solution using standard algorithm (5.NBT.5) b. Student gives an accurate explanation: Sample explanation: Understanding the Distributive Property can help me understand what is going on in the standard algorithm because I am breaking down each number to its expanded form and distributing the values through multiplication. 5.NBT.5 23. a. Student gives an accurate explanation: The incorrect statement is C. It is incorrect because four crates cannot hold 45 boxes of rocks according to the quantity given in the problem. b. Student gives correct answer: Four crates can hold 40 boxes of rocks. 5.NBT.6
Copyright © Swun Math Grade 5 Unit 2 Assessment (Answer Key) Page 3
Points 0.5 0.5 1
0.5 0.5 1
1
1
