Cryptarithm Questions for Class 7 & Class 8 | Number Play Extra Practice
Cryptarithm is an exciting mathematical puzzle where letters represent digits. It is an excellent way for students to develop logical thinking, computational thinking, problem-solving skills, number sense, and reasoning skills. These Cryptarithm questions are useful extra practice for Class 7 and Class 8 Mathematics, especially for students studying NCERT Ganita Prakash Chapter 6 – Number Play.
In this worksheet, you will find 20 Cryptarithm puzzles divided into Easy and Moderate levels. Try to solve each puzzle by assigning a different digit to every letter. Challenge yourself to complete the puzzles without looking at the answers!
Watch: Cryptarithm Rules
Before starting the worksheet, watch this short video to understand the basic Cryptarithm Rules and learn how to approach these number puzzles step by step.
Cryptarithm Rules to Remember
- Each letter represents exactly one digit from 0 to 9.
- Different letters must represent different digits.
- The same letter always represents the same digit.
- A multi-digit number cannot begin with 0.
- Use addition and carrying carefully from right to left.
- Check your complete number equation before accepting your answer.
Cryptarithm Worksheet – Easy Level
Try these 10 easy Cryptarithm questions first. Write the digit represented by each letter and check the complete addition.
Cryptarithm Worksheet – Moderate Level
Ready for a bigger challenge? These puzzles involve more letters, larger numbers, and additional carrying.
Enjoyed These Cryptarithm Puzzles?
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▶ Subscribe to The Busy Brains on YouTubeAnswers to Cryptarithm Questions
Try all the questions yourself before checking the answers. Remember that a good Cryptarithm solver should be able to explain why each digit must have its assigned value.
I = 1, B = 9, L = 0
1 + 99 = 100
A = 9, S = 2, M = 1, O = 0
92 + 9 = 101
N = 7, O = 4, T = 9, L = 1, A = 0, E = 2
74 + 74 + 944 = 1092
One valid solution: O = 2, N = 0, E = 6, T = 4, W = 1
206 + 206 = 412
One valid solution: T = 7, W = 6, O = 5, F = 1, U = 3, R = 0
765 + 765 = 1530
One valid solution: G = 5, O = 1, U = 0, T = 2
51 + 51 = 102
One valid solution: S = 7, U = 2, N = 0, M = 1, O = 4
720 + 720 = 1440
One valid solution: R = 5, E = 4, D = 2, B = 1, L = 0, U = 8
542 + 542 = 1084
One valid solution: F = 8, U = 2, N = 7, P = 1, L = 6, A = 5, Y = 4
827 + 827 = 1654
One valid solution: F = 8, O = 2, U = 3, R = 5, E = 1, I = 6, G = 4, H = 7, T = 0
8235 + 8235 = 16470
B = 7, A = 4, S = 8, E = 3, L = 5, G = 1, M = 9
7483 + 7455 = 14938
E = 8, A = 1, T = 9, H = 2, P = 0, L = 3
819 + 9219 = 10038
S = 9, E = 5, N = 6, D = 7, M = 1, O = 0, R = 8, Y = 2
9567 + 1085 = 10652
F = 2, O = 9, R = 7, T = 8, Y = 6, E = 5, N = 0, S = 3, I = 1, X = 4
29786 + 850 + 850 = 31486
C = 9, R = 6, O = 2, S = 3, A = 5, D = 1, N = 8, G = 4, E = 7
96233 + 62513 = 158746
D = 5, O = 2, N = 6, A = 4, L = 8, G = 1, E = 9, R = 7, B = 3, T = 0
526485 + 197485 = 723970
S = 5, A = 4, T = 6, U = 7, R = 9, N = 0, P = 1, L = 3, E = 8
546790 + 794075 = 1340865
H = 5, E = 4, S = 9, T = 7, L = 1, I = 0, G = 2
54 + 9449 + 754 = 10257
Y = 9, O = 4, U = 2, R = 6, H = 1, E = 0, A = 3, T = 8
9426 + 942 = 10368
K = 4, A = 9, N = 7, S = 2, O = 5, H = 8, I = 6, R = 3, E = 0, G = 1
497292 + 5865 = 503157
Keep Practising! Cryptarithm puzzles are a fun way to strengthen logical reasoning, number sense, computational thinking, and problem-solving skills. If you enjoyed these Class 7 and Class 8 Number Play Cryptarithm questions, try solving them again without looking at the answers.
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