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Number-Letter Codes - Intermediate Level: letter-number mapping INTERMEDIATE

Quick mental agility ★ session: 20 intermediate-level number-letter codes questions. Worksheet 17 of 30 - Focus: letter-number mapping. Practice positional codes, ASCII patterns, letter value codes with instant feedback. Great for mid-level students needing moderate complexity with mixed patterns practice.

📝 Worksheet 17 of 30 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Intermediate level

What you'll learn in this worksheet:
Your progress through Number-Letter Codes
Worksheet 17 of 30 (56% complete)

Question 1

If a word's code is the product of its letter positions, what is 'CAT's code?
Product calculation: C=3 × A=1 × T=20 = 60
product, arithmetic

Question 2

If A=26, B=25, C=24... Z=1 (reverse order), then 'AXE' is coded as?
Reverse coding: A=26 + X=3 + E=22 → concatenated = 26322
reverse, sequence

Question 3

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 4

If each letter is coded as its ASCII value (A=65, B=66...), what is 'CAT' coded as?
ASCII coding: C=67, A=65, T=84 → concatenated = 676584
ascii, computer

Question 5

For 'PRS', find the differences between consecutive letter positions (A=1,B=2...). Format as comma-separated values.
Positions: [16, 18, 19] → Differences: [2, 1]
difference, sequence, pattern

Question 6

If a word's code is the sum of its letter positions (A=1,B=2...), what is 'HORSE's code?
Sum calculation: H=8 + O=15 + R=18 + S=19 + E=5 = 65
sum, arithmetic

Question 7

If each letter is coded as the sum of digits of its position (A=1→1, B=2→2, ..., J=10→1+0=1...), what is 'BAD' coded as?
Digit sum coding: B=2→digit_sum=2, A=1→digit_sum=1, D=4→digit_sum=4 → concatenated = 214
digits, sum, pattern

Question 8

If each letter is coded as the square of its position (A=1→1, B=2→4, C=3→9...), what is 'DOG' coded as?
Square coding: D=4²=16, O=15²=225, G=7²=49 → concatenated = 1622549
square, exponential, advanced

Question 9

If a word's code is the product of its letter positions, what is 'BEAR's code?
Product calculation: B=2 × E=5 × A=1 × R=18 = 180
product, arithmetic

Question 10

For 'LMN', find the differences between consecutive letter positions (A=1,B=2...). Format as comma-separated values.
Positions: [12, 13, 14] → Differences: [1, 1]
difference, sequence, pattern

Question 11

For 'BDF', find the differences between consecutive letter positions (A=1,B=2...). Format as comma-separated values.
Positions: [2, 4, 6] → Differences: [2, 2]
difference, sequence, pattern

Question 12

For 'JKL', 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:J→10, Pos2:K→K, Pos3:L→12 → 10K12
position, pattern, mixed

Question 13

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 14

For 'ACE', find the differences between consecutive letter positions (A=1,B=2...). Format as comma-separated values.
Positions: [1, 3, 5] → Differences: [2, 2]
difference, sequence, pattern

Question 15

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 16

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

Question 17

If letters are coded as (position mod 8), 'NUMBER' becomes?
Modular coding: N=14%8=6, U=21%8=5, M=13%8=5, B=2%8=2, E=5%8=5, R=18%8=2 → concatenated = 655252
modular, advanced

Question 18

If each letter is shifted forward by 5 positions (A→F), what is 'BOOK' coded as?
Shift coding: B→G(+5), O→T(+5), O→T(+5), K→P(+5) → GTTP
shift, caesar, cipher

Question 19

If A=1, B=2, C=3... Z=26, then 'FROG' is coded as?
Letter to number: F=6 + R=18 + O=15 + G=7 → concatenated = 618157
basic, sequence

Question 20

For 'EGG', odd positions use shift coding, even positions use reverse coding. What is the result?
Alternating coding: E→G(+2), G→20(rev), G→I(+2) → G20I
alternating, mixed, advanced
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