Caesar Cipher
7th - 8th Grade
•13 Qs
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Caesar Cipher
Quiz
•
Mathematics
•
7th - 8th Grade
•
Practice Problem
•
Medium
+10
Standards-aligned
Maughn Wright
Used 529+ times
FREE Resource
About this resource
Looking at these thirteen questions, this quiz covers cryptography fundamentals with a specific focus on the Caesar cipher encryption method. The content addresses core mathematical concepts including modular arithmetic, pattern recognition, and algorithmic thinking that align perfectly with grades 7-8 mathematics standards. Students need to understand the systematic nature of letter substitution, grasp the concept of shift values (including negative shifts for backward movement through the alphabet), and apply consistent mathematical operations to encrypt and decrypt messages. The quiz requires students to master cryptographic vocabulary such as plaintext, ciphertext, encryption, and decryption, while also developing the computational skills to manually execute Caesar cipher algorithms with various shift values. The mathematical reasoning involves understanding cyclic patterns in the alphabet and applying uniform transformations across all letters in a given text. Created by Maughn Wright, a Mathematics teacher in the US who teaches grades 7 and 8. This comprehensive quiz serves as an excellent tool for introducing students to the intersection of mathematics and computer science through hands-on cryptography practice. Teachers can effectively use this as a formative assessment to gauge student understanding of algorithmic processes, or as an engaging homework assignment that reinforces mathematical pattern recognition skills. The quiz works particularly well as a review activity before advancing to more complex encryption methods, and the varied question types make it suitable for differentiated instruction in mixed-ability classrooms. The content directly supports Common Core Mathematics Standards 8.F.A.1 (understanding functions as rules that assign outputs to inputs) and Mathematical Practice Standards MP.1 (making sense of problems and persevering in solving them) and MP.8 (looking for and expressing regularity in repeated reasoning), as students must recognize the systematic patterns inherent in cipher operations.
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13 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
A cipher is _________________________.
a person who makes up secret codes
an algorithm that is used to scramble text so that it can be passed in secret
a lock that can be used to lock a message in a lock box
any puzzle, such as a crossword or Sudoku puzzle
Tags
CCSS.RI.5.10
CCSS.RI.6.4
CCSS.RI.7.4
CCSS.RI.8.4
CCSS.RI.9-10.4
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Encrypt the word alphabet using a Caesar cipher with a shift of 3
DVSDULQV
DOOFOHDU
DOSKDEHW
DORQHBHV
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
A Caesar cipher is an example of a ______________________.
transposition cipher
bimodal cipher
substitution cipher
substantial cipher
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
The following word was encrypted using a Caesar cipher with a shift of 2: ecguct. What word is it?
julius
caesar
romans
cipher
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Who was the first know user of the Caesar Cipher?
Caesar Romanus
Julius Caesar
Alan Turing
There isn't one
Tags
CCSS.L.1.5A
CCSS.L.1.5B
CCSS.L.K.5A
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In Cryptography, original message, before being transformed, is called
Simple Text
Plain Text
Cipher Text
Filled Text
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
An encryption algorithm transforms plain text into:
Cipher text
Simple Text
Empty Text
Plain Text
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