ReasoningAges 10-12

Shift cipher decoding

Apply a fixed forward alphabet shift to encode or decode a letter accurately. Review suitability for your learners before teaching.

New variation Try interactive challenge Browse templates

Age band:Ages 10-12 Ages 13-15

Choose “Save as PDF” to keep a copy. Use your browser’s paper setting for A4 or Letter.

Worksheet StudioPractice pack · Ages 10-12

Shift cipher decoding

Take your time. Show your thinking.

1. In a shift cipher where every letter moves 5 places forward in the alphabet, what letter does O become?
5 · Shift cipher decoding
2. In a shift cipher where every letter moves 6 places forward in the alphabet, what letter does T become?
6 · Shift cipher decoding
3. In a shift cipher where every letter moves 4 places forward in the alphabet, what letter does S become?
4 · Shift cipher decoding
4. In a shift cipher where every letter moves 5 places forward in the alphabet, what letter does A become?
5 · Shift cipher decoding
5. In a shift cipher where every letter moves 3 places forward in the alphabet, what letter does S become?
3 · Shift cipher decoding
6. In a shift cipher where every letter moves 2 places forward in the alphabet, what letter does Q become?
2 · Shift cipher decoding
7. In a shift cipher where every letter moves 1 place forward in the alphabet, what letter does L become?
1 · Shift cipher decoding
8. In a shift cipher where every letter moves 6 places forward in the alphabet, what letter does R become?
6 · Shift cipher decoding
9. In a shift cipher where every letter moves 2 places forward in the alphabet, what letter does O become?
2 · Shift cipher decoding
10. In a shift cipher where every letter moves 6 places forward in the alphabet, what letter does G become?
6 · Shift cipher decoding
11. In a shift cipher where every letter moves 5 places forward in the alphabet, what letter does B become?
5 · Shift cipher decoding
12. In a shift cipher where every letter moves 2 places forward in the alphabet, what letter does M become?
2 · Shift cipher decoding

12 questions · Seed 104738 · Age guidance, not curriculum certification

View the answer key

Worksheet StudioAnswer key · Ages 10-12

Shift cipher decoding

Answers and reasoning. Review before teaching.

1. In a shift cipher where every letter moves 5 places forward in the alphabet, what letter does O become?
T
Moving 5 places forward from O reaches T.
2. In a shift cipher where every letter moves 6 places forward in the alphabet, what letter does T become?
Z
Moving 6 places forward from T reaches Z.
3. In a shift cipher where every letter moves 4 places forward in the alphabet, what letter does S become?
W
Moving 4 places forward from S reaches W.
4. In a shift cipher where every letter moves 5 places forward in the alphabet, what letter does A become?
F
Moving 5 places forward from A reaches F.
5. In a shift cipher where every letter moves 3 places forward in the alphabet, what letter does S become?
V
Moving 3 places forward from S reaches V.
6. In a shift cipher where every letter moves 2 places forward in the alphabet, what letter does Q become?
S
Moving 2 places forward from Q reaches S.
7. In a shift cipher where every letter moves 1 place forward in the alphabet, what letter does L become?
M
Moving 1 place forward from L reaches M.
8. In a shift cipher where every letter moves 6 places forward in the alphabet, what letter does R become?
X
Moving 6 places forward from R reaches X.
9. In a shift cipher where every letter moves 2 places forward in the alphabet, what letter does O become?
Q
Moving 2 places forward from O reaches Q.
10. In a shift cipher where every letter moves 6 places forward in the alphabet, what letter does G become?
M
Moving 6 places forward from G reaches M.
11. In a shift cipher where every letter moves 5 places forward in the alphabet, what letter does B become?
G
Moving 5 places forward from B reaches G.
12. In a shift cipher where every letter moves 2 places forward in the alphabet, what letter does M become?
O
Moving 2 places forward from M reaches O.

12 questions · Seed 104738 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 10-12

Shift cipher decoding

Take your time. Show your thinking.

1. In a shift cipher where every letter moves 5 places forward in the alphabet, what letter does O become?
5 · Shift cipher decoding
2. In a shift cipher where every letter moves 6 places forward in the alphabet, what letter does T become?
6 · Shift cipher decoding
3. In a shift cipher where every letter moves 4 places forward in the alphabet, what letter does S become?
4 · Shift cipher decoding
4. In a shift cipher where every letter moves 5 places forward in the alphabet, what letter does A become?
5 · Shift cipher decoding
5. In a shift cipher where every letter moves 3 places forward in the alphabet, what letter does S become?
3 · Shift cipher decoding
6. In a shift cipher where every letter moves 2 places forward in the alphabet, what letter does Q become?
2 · Shift cipher decoding
7. In a shift cipher where every letter moves 1 place forward in the alphabet, what letter does L become?
1 · Shift cipher decoding
8. In a shift cipher where every letter moves 6 places forward in the alphabet, what letter does R become?
6 · Shift cipher decoding
9. In a shift cipher where every letter moves 2 places forward in the alphabet, what letter does O become?
2 · Shift cipher decoding
10. In a shift cipher where every letter moves 6 places forward in the alphabet, what letter does G become?
6 · Shift cipher decoding
11. In a shift cipher where every letter moves 5 places forward in the alphabet, what letter does B become?
5 · Shift cipher decoding
12. In a shift cipher where every letter moves 2 places forward in the alphabet, what letter does M become?
2 · Shift cipher decoding

12 questions · Seed 104738 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 10-12

Shift cipher decoding

Answers and reasoning. Review before teaching.

1. In a shift cipher where every letter moves 5 places forward in the alphabet, what letter does O become?
T
Moving 5 places forward from O reaches T.
2. In a shift cipher where every letter moves 6 places forward in the alphabet, what letter does T become?
Z
Moving 6 places forward from T reaches Z.
3. In a shift cipher where every letter moves 4 places forward in the alphabet, what letter does S become?
W
Moving 4 places forward from S reaches W.
4. In a shift cipher where every letter moves 5 places forward in the alphabet, what letter does A become?
F
Moving 5 places forward from A reaches F.
5. In a shift cipher where every letter moves 3 places forward in the alphabet, what letter does S become?
V
Moving 3 places forward from S reaches V.
6. In a shift cipher where every letter moves 2 places forward in the alphabet, what letter does Q become?
S
Moving 2 places forward from Q reaches S.
7. In a shift cipher where every letter moves 1 place forward in the alphabet, what letter does L become?
M
Moving 1 place forward from L reaches M.
8. In a shift cipher where every letter moves 6 places forward in the alphabet, what letter does R become?
X
Moving 6 places forward from R reaches X.
9. In a shift cipher where every letter moves 2 places forward in the alphabet, what letter does O become?
Q
Moving 2 places forward from O reaches Q.
10. In a shift cipher where every letter moves 6 places forward in the alphabet, what letter does G become?
M
Moving 6 places forward from G reaches M.
11. In a shift cipher where every letter moves 5 places forward in the alphabet, what letter does B become?
G
Moving 5 places forward from B reaches G.
12. In a shift cipher where every letter moves 2 places forward in the alphabet, what letter does M become?
O
Moving 2 places forward from M reaches O.

12 questions · Seed 104738 · Age guidance, not curriculum certification