Free Grade 10 Computer Science Worksheets with Answers

Grade 10 Tracing Code (Python)

3A-AP-15

Reading short Python programs with variables, if/else and loops and working out what they print.

e.g. x = 1. if x > 10: print("big") elif x == 10: print("equal") else: print("small"). What is printed?

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Grade 10 Lists & Arrays

3A-AP-14

Indexing, slicing and changing lists, and finding their length and values.

e.g. nums = [42, 5, 36, 42, 43, 13]. What is nums[-2]?

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Grade 10 Functions & Return Values

Tracing functions with parameters and return values, including functions that call other functions.

e.g. def f(x): return 4 * x + 5. What does print(f(f(6))) show?

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Grade 10 Searching & Sorting

Counting the steps in linear and binary search and tracing bubble and selection sort passes.

e.g. Bubble sort (smallest to largest). Write the list after the first full pass: 15, 25, 28, 39, 37, 11

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Grade 10 Algorithm Efficiency (Big-O)

Comparing how the number of steps grows: O(1), O(log n), O(n) and O(n²).

e.g. What is the time complexity of this code: print(items[3])? Choose O(1), O(log n), O(n) or O(n²).

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Grade 10 Logic Gates

Working out the outputs of AND, OR, NOT and XOR gates and small logic circuits.

e.g. A circuit computes (A OR B) AND C with A = 0, B = 0, C = 1. What is the output?

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Grade 10 Boolean Expressions

Evaluating Boolean expressions with AND, OR and NOT, including comparisons.

e.g. What is the value of not (True and False) or True?

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Grade 10 Hexadecimal

3A-DA-09

Converting between hexadecimal, decimal and binary, and reading hex colour codes.

e.g. Convert the hexadecimal number EF to 8-bit binary.

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Grade 10 Networks & the Internet

How networks move data: devices, IP addresses, packets and download times.

e.g. Which technology connects devices without cables using radio waves: USB, HDMI, or WiFi?

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Grade 10 Cybersecurity & Passwords

Password strength by counting combinations, spotting threats, and simple encryption.

e.g. A password is 4 lowercase letters (a–z). How many passwords are possible?

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Grade 10 Recursion

Advanced

Tracing recursive functions like factorial, Fibonacci and sums, and counting calls.

e.g. def s(n): if n == 0: return 0; return n + s(n - 1). What is s(8)?

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Grade 10 Computing Challenge Puzzles

Challenge

Puzzles that stretch computational thinking: bit patterns, logic and clever counting.

e.g. How many different patterns can 4 bits make?

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