Ages 13–18
BrainteenAges 12–16PuzzlesPuzzle
Binary numbers (Tricky)
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Convert each number between number systems.
Licence: Crayonbird original
Also in: Español
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About this activity
What your child practises
Skills: Binary numbers (level 2).
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 12–16. That’s Grade 7–11 in the US, Year 8–12 in England, JSS 1 – SS 2 in Nigeria and Class 7–11 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
- Solve the first part together while thinking aloud about your strategy, then hand over the pencil.
- Hold back the answer and give a small hint instead (“Look at the top row”), so the “aha!” moment stays theirs.
- 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
- On level (Tricky) – pitched at ages 12–16
- Answer key
- Yes – print it with the sheet or on its own