Ages 12–16
BrainteenAges 13–18PuzzlesPuzzle
Binary and hexadecimal (Expert)
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Convert each number between number systems.
Licence: Crayonbird original
Also in: العربية
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About this activity
What your child practises
Skills: Binary numbers (level 3).
Logical reasoning, patience and step-by-step problem solving.
What’s included
- 15 questions
- An answer key you can print with the sheet or on its own
- An on-screen version with instant marking and stars
Age and school year
Made for ages 13–18. That’s Grade 8–12 in the US, Year 9–13 in England, JSS 2 – SS 3 in Nigeria and Class 8–12 in India.
How to use it
- Print it at home or school – it fits a standard A4 or US Letter page.
- Print the answer key too, so marking takes seconds.
- Play it on screen: answers are marked instantly and children earn stars.
- Write on it on a tablet or touchscreen with a finger or stylus – no printer needed.
Tips for parents and teachers
- Mark each find with a highlighter or coloured pencil; seeing progress keeps children going.
- Puzzles make great early-finisher or calm-down activities – keep a few printed copies in a folder.
- Encourage teens to set their own target (say 12 out of 15) and track it over a few attempts.
Good to know
- Time needed
- About 5–10 minutes
- You’ll need
- A printer (or a tablet to work on screen), a pencil and an eraser
- Difficulty
- Harder (Expert) – pitched at ages 13–18
- Answer key
- Yes – print it with the sheet or on its own