CRACK THE CODE · GRADE 4
Minecraft Redstone Code Breaker
Use your math skills to figure out the value of each block and unlock the redstone vault before nightfall.
Each shape stands for a number. Work out the missing ones first, then solve the shape equations and read off the 4-digit code. Do it here or print the sheet — the answer key comes with it.
The key
Every symbol is a whole number from 1 to 15. A number in front of a shape means multiply: 2 stars = 2 x star.
Find the missing values
Some shapes in the key are missing. Use these equations to work them out, then write them into the key. Take them in order.
Crack these
- 1.×−=
- 2.3+2=CODE 1
- 3.(+)×=
- 4.(+)×=CODE 2
- 5.×−=
- 6.100+=CODE 3
- 7.×=
- 8.×+=CODE 4
- 9.×+=
- 10.×=
The vault code
Take the ones digit of your answers to problems 2, 4, 6, 8 (the ones tagged CODE 1–4), in that order. That opens the redstone treasure vault.
Show answer key (for grown-ups)
Key: pentagon = 3 · star = 14 · moon = 6 (hidden) · square = 8 (hidden) · triangle = 12 (hidden) · ring = 15
Every symbol is a whole number from 1 to 15.
Vault code: 2840