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Number-Letter Codes - Beginner Level: letter-number mapping BEGINNER

Ready to master number-letter codes? This concept mastery features 20 beginner-level challenges. Worksheet 2 of 30 sharpens your letter-number mapping skills. Master letter-number mapping, positional codes, ASCII patterns through guided practice. Perfect for entry-level test preparation.

📝 Worksheet 2 of 30 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Beginner level

What you'll learn in this worksheet:
Your progress through Number-Letter Codes
Worksheet 2 of 30 (6% complete)

Question 1

If each letter is coded as its ASCII value (A=65, B=66...), what is 'CAR' coded as?
ASCII coding: C=67, A=65, R=82 → concatenated = 676582
ascii, computer

Question 2

If each letter is shifted forward by 2 positions (A→C), what is 'PEN' coded as?
Shift coding: P→R(+2), E→G(+2), N→P(+2) → RGP
shift, caesar, cipher

Question 3

If A=26, B=25, C=24... Z=1 (reverse order), then 'COW' is coded as?
Reverse coding: C=24 + O=12 + W=4 → concatenated = 24124
reverse, sequence

Question 4

For 'XYZ', find the differences between consecutive letter positions (A=1,B=2...). Format as comma-separated values.
Positions: [24, 25, 26] → Differences: [1, 1]
difference, sequence, pattern

Question 5

If a word's code is the product of its letter positions, what is 'BAD's code?
Product calculation: B=2 × A=1 × D=4 = 8
product, arithmetic

Question 6

If a word's code is the sum of its letter positions (A=1,B=2...), what is 'LION's code?
Sum calculation: L=12 + I=9 + O=15 + N=14 = 50
sum, arithmetic

Question 7

If each letter is shifted forward by 5 positions (A→F), what is 'CAT' coded as?
Shift coding: C→H(+5), A→F(+5), T→Y(+5) → HFY
shift, caesar, cipher

Question 8

If letters are coded as 5-bit binary (A=1=00001, B=2=00010...), 'ABC' is coded as?
Binary coding: A=1=00001, B=2=00010, C=3=00011 → concatenated = 000010001000011
binary, advanced

Question 9

If each letter is coded as its ASCII value (A=65, B=66...), what is 'BUG' coded as?
ASCII coding: B=66, U=85, G=71 → concatenated = 668571
ascii, computer

Question 10

If vowels (A,E,I,O,U) are coded as 'V' and consonants as 'C', what is the code for 'EAGLE'?
Vowel/Consonant coding: E→V, A→V, G→C, L→C, E→V → VVCCV
vowel, consonant, pattern

Question 11

If letters are coded as (position mod 5), 'HELLO' becomes?
Modular coding: H=8%5=3, E=5%5=0, L=12%5=2, L=12%5=2, O=15%5=0 → concatenated = 30220
modular, advanced

Question 12

If a word's code is the product of its letter positions, what is 'BAD's code?
Product calculation: B=2 × A=1 × D=4 = 8
product, arithmetic

Question 13

For 'CAT', odd positions use shift coding, even positions use reverse coding. What is the result?
Alternating coding: C→E(+2), A→26(rev), T→V(+2) → E26V
alternating, mixed, advanced

Question 14

If vowels (A,E,I,O,U) are coded as 'V' and consonants as 'C', what is the code for 'CAT'?
Vowel/Consonant coding: C→C, A→V, T→C → CVC
vowel, consonant, pattern

Question 15

If A=26, B=25, C=24... Z=1 (reverse order), then 'ACE' is coded as?
Reverse coding: A=26 + C=24 + E=22 → concatenated = 262422
reverse, sequence

Question 16

For 'GHI', odd positions (1st,3rd,5th...) are coded as their position numbers, even positions are shifted by 1 letter forward. What is the code?
Odd/Even coding: Pos1:G→7, Pos2:H→H, Pos3:I→9 → 7H9
position, pattern, mixed

Question 17

For 'BAD', odd positions use position coding, even positions use reverse coding. What is the result?
Alternating coding: B→2(pos), A→26(rev), D→4(pos) → 2264
alternating, mixed, advanced

Question 18

If A=1, B=2, C=3... Z=26, then 'BEAR' is coded as?
Letter to number: B=2 + E=5 + A=1 + R=18 → concatenated = 25118
basic, sequence

Question 19

If vowels (A,E,I,O,U) are coded as 'V' and consonants as 'C', what is the code for 'MOUSE'?
Vowel/Consonant coding: M→C, O→V, U→V, S→C, E→V → CVVCV
vowel, consonant, pattern

Question 20

For 'VWX', odd positions (1st,3rd,5th...) are coded as their position numbers, even positions are shifted by 1 letter forward. What is the code?
Odd/Even coding: Pos1:V→22, Pos2:W→W, Pos3:X→24 → 22W24
position, pattern, mixed
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