Function Machines (Add & Subtract) - Answer Key - Determine Which Rule the Function Machine Is Using

Sep 30, 2026

Uploaded by Finn

Function Machines (Add & Subtract) answer key provides solution choices for a set of problems that ask students to determine the rule used by a function machine. Each item shows an input number followed by multiple-choice options involving either addition or subtraction. The key lists the correct option letter for each numbered problem, enabling verification of answers across questions 1 through 10 and related variants.

LanguageEnglish

CategoryExam

FormatPDF

Pages3

Reading Time8 min

AccessFree to download

Determine which rule the function machine is using

Multiple-choice options for add/subtract rules

Function Machines (Add & Subtract) Name: | Determine which rule the function machine is using. | Answers | | --- | --- | | 1)
3)
5)
7)
9)

22 in

16

A. Add 5
B. Subtract 4
C. Subtract 6
D. Subtract 3
21 in

35

A. Subtract 11
B. Add 18
C. Add 14
D. Subtract 15
30 in

23

A. Subtract 7
B. Subtract 6
C. Add 3
D. Subtract 8
38 in

21

A. Subtract 18
B. Subtract 17
C. Add 13
D. Subtract 14
32 in

17

A. Subtract 11
B. Subtract 15
C. Add 10
D. Subtract 20
2)
7

A. Add 17
B. Add 18
C. Subtract 14
D. Subtract 18
4)
13

A. Add 18
B. Add 21
C. Add 17
D. Subtract 19
6)
19

A. Subtract 13
B. Add 13
C. Add 17
D. Subtract 8
8)
23

A. Subtract 9
B. Subtract 11
C. Subtract 8
D. Add 9
10)
31

A. Subtract 19
B. Subtract 25
C. Subtract 24
D. Add 22
out 24
out 30
out 32
out 15
out 7

| 1.
2.
3.
4.
5.
6.
7.
8.
9.
10. | [Math](Math www.CommonCoreSheets.com 1 1-10)[ www.CommonCoreSheets.com](Math www.CommonCoreSheets.com 1 1-10)[ 1](Math www.CommonCoreSheets.com 1 1-10)[ 1-10](Math www.CommonCoreSheets.com 1 1-10) 90 80 70 60 50 40 30 20 10 0 | | | | | | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | Function Machines (Add & Subtract) Name: Answer Key | Determine which rule the function machine is using. | | | | | | | Answers | | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1)
3)
5)
7)
9)

22 in

16

A. Add 5
B. Subtract 4
C. Subtract 6
D. Subtract 3
21 in

35

A. Subtract 11
B. Add 18
C. Add 14
D. Subtract 15
30 in

23

A. Subtract 7
B. Subtract 6
C. Add 3
D. Subtract 8
38 in

21

A. Subtract 18
B. Subtract 17
C. Add 13
D. Subtract 14
32 in

17

A. Subtract 11
B. Subtract 15
C. Add 10
D. Subtract 20
2)
7

A. Add 17
B. Add 18
C. Subtract 14
D. Subtract 18
4)
13

A. Add 18
B. Add 21
C. Add 17
D. Subtract 19
6)
19

A. Subtract 13
B. Add 13
C. Add 17
D. Subtract 8
8)
23

A. Subtract 9
B. Subtract 11
C. Subtract 8
D. Add 9
10)
31

A. Subtract 19
B. Subtract 25
C. Subtract 24
D. Add 22
out 24
out 30
out 32
out 15
out 7

| | | | | | | 1. C
2. A
3. C
4. C
5. A
6. B
7. B
8. C
9. B
10. C | | | | | 1-10 | 90 | 80 | 70 | 60 | 50 | 40 | 30 | 20 | 10 | 0 | [Math](Math www.CommonCoreSheets.com 1)[ www.CommonCoreSheets.com](Math www.CommonCoreSheets.com 1)[ 1](Math www.CommonCoreSheets.com 1) Function Machines (Add & Subtract) Name: | Determine which rule the function machine is using. | Answers | | --- | --- | | 1)
3)
5)

2)
7

A. Add 17
B. Add 18
C. Subtract 14
D. Subtract 18
4)
13

A. Add 18
B. Add 21
C. Add 17
D. Subtract 19
6)
19

A. Subtract 13
B. Add 13
C. Add 17
D. Subtract 8
out 24
out 30
out 32

| 1.
2.
3.
4.
5.
6. | Math Modified [www.CommonCoreSheets.com](www.CommonCoreSheets.com) 1 1-6 83 67 50 33 17 0

FAQs

What do the problems ask students to determine?

Students determine which rule the function machine is using for each input number, choosing between add or subtract operations from the answer options.

How are answers presented in the answer key?

The answer key matches each numbered problem with the correct multiple-choice option letter (A-D).

Do the problems use both addition and subtraction rules?

Yes. The options include both adding specific values and subtracting specific values, and the correct rule varies by question.

Sep 30, 2026

Uploaded by Finn