G5 U4 Assessment Key
Grade 5 Unit 4 Assessment Adding Fractions
Answer Key All questions are worth 1 point unless otherwise noted. 1.
2.
3.
4.
5.
A
BC
B
B
D
5.NF.1
5.NF.1
5.NF.2
5.NF.2
5.NF.2
6.
7.
8.
9.
10.
C
A
C
B
BC
5.NF.2
5.NF.2
5.NF.2
1.NF.2
5.NF.1
11.
12.
13.
14.
15.
BD
D
ACD
AC
D
5.NF.2
5.NF.1
5.NF.2
5.NF.2
5.NF.1
16. 2 points: Student provides an accurate model or algorithm. Sample model and algorithm: 3 1 9 8 17 + = + = 8 3 24 24 24
3 points: Student gives an accurate explanation. Explanations may vary. Sample explanation: I used benchmark fractions to determine that my answer is reasonable. 1
3
1
9
3
close to the benchmark fraction (because is equivalent to ). I added 3
2
to estimate the solution and the sum is . The actual solution is 2
3
very close to , as shown on my area model. 3 5.NF.2 Copyright © Swun Math Grade 5 Unit 4 Assessment (Answer Key)
17
3
is
8 1 3
+
, which is
24
1 3
Answer Key All questions are worth 1 point unless otherwise noted. 1.
2.
3.
4.
5.
A
BC
B
B
D
5.NF.1
5.NF.1
5.NF.2
5.NF.2
5.NF.2
6.
7.
8.
9.
10.
C
A
C
B
BC
5.NF.2
5.NF.2
5.NF.2
1.NF.2
5.NF.1
11.
12.
13.
14.
15.
BD
D
ACD
AC
D
5.NF.2
5.NF.1
5.NF.2
5.NF.2
5.NF.1
16. 2 points: Student provides an accurate model or algorithm. Sample model and algorithm: 3 1 9 8 17 + = + = 8 3 24 24 24
3 points: Student gives an accurate explanation. Explanations may vary. Sample explanation: I used benchmark fractions to determine that my answer is reasonable. 1
3
1
9
3
close to the benchmark fraction (because is equivalent to ). I added 3
2
to estimate the solution and the sum is . The actual solution is 2
3
very close to , as shown on my area model. 3 5.NF.2 Copyright © Swun Math Grade 5 Unit 4 Assessment (Answer Key)
17
3
is
8 1 3
+
, which is
24
1 3
