Mathematics – Grade 8 Practice Test Answer and Alignment ...

Mathematics ¨C Grade 8

Practice Test Answer and Alignment Document

Online ABO

The following pages include the answer key for all machine-scored items, followed by

the rubrics for the hand-scored items.

? The rubrics show sample student responses. Other valid methods for solving

the problem can earn full credit unless a specific method is required by the

item.

? In items where the scores are awarded for full and partial credit, the definition

of partial credit will be confirmed during range-finding (reviewing sets of real

student work).

? If students make a computation error, they can still earn points for reasoning

or modeling.

Unit 1

Item

Number

Answer Key

Evidence

Statement

Key/Content

Scope

The response is correct as long as 8 and 10 are input

values and 1 and 5 are output values. For example:

1.

2.

8.F.1-1

?1

8.EE.7.b

Grade 8 Mathematics Online ABO Practice Test ¨C Answer and Alignment Document

1

3.

8.F.5-1

4.

8.NS.2

5.

C

8.EE.2

6.

(10, ?2)

8.EE.8b-1

7.

8.F.3-2

8.

8.EE.8a

9.

10.

D

8.NS.1

A, C, F

8.G.1a

Part A:

11.

12.

8.G.2

Part B:

There are multiple correct responses. For example:

8.F.1-2

Grade 8 Mathematics Online ABO Practice Test ¨C Answer and Alignment Document

2

13.

8.EE.1

B, E

14.

8.EE.8b-2

15.

A

8.SP.2

16.

300

8.EE.3

Unit 2

Item

Number

Answer Key

Evidence

Statement

Key/Content

Scope

Grade 8 Mathematics Online ABO Practice Test ¨C Answer and Alignment Document

3

1.

8.EE.5-1

2.

Part A: D

Part B: 4.5 or equivalent

8.EE.C.Int.1

3.

See rubric

8.D.3/8.EE.5

4.

5.

Part A: see rubric

Part B: see rubric

Part A: B

8.C.3.3/8.G.5

Part B: 1

8.G.9

Part A: C

Part B: see rubric

Part C: see rubric

8.C.6/7.EE.1

3

6.

Unit 3

Item

Number

1.

Answer Key

Evidence

Statement

Key/Content

Scope

8.G.7-1

12

2.

8.EE.5-2

3.

Part A: C

Part B: 8

8.SP.3

4.

See rubric

8.D.1/8.EE.5

5.

Part A: A, E

Part B: see rubric

8.C.1.2/8.EE.8

6.

A, B, C, E

8.EE.6-1

Grade 8 Mathematics Online ABO Practice Test ¨C Answer and Alignment Document

4

7.

Part A: see rubric

Part B: see rubric

8.

8.D.2/7.RP.3 and

7.EE.3

8.F.2

Rubrics start on the next page.

Grade 8 Mathematics Online ABO Practice Test ¨C Answer and Alignment Document

5

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