CRACK THE CODE · GRADE 7
Deep Space Telemetry Decryption
Solve the algebraic systems of planetary symbols to bypass the corrupted telemetry lock and download the star chart coordinates.
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 -9 to 20 (some are negative!). A number in front of a shape means multiply: 2 stars = 2 x star. A small 2 after a shape means square it: star^2 = star 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.(+)×=CODE 1
- 3.2−=
- 4.3−2+=CODE 2
- 5.×=
- 6.×−=CODE 3
- 7.×−=
- 8.−−=CODE 4
- 9.2+=
- 10.3−2+=
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 telemetry cache of.
Show answer key (for grown-ups)
Key: lightning bolt = -5 (hidden) · circle = -1 (hidden) · diamond = 17 · pentagon = -4 · square = -2 · moon = 3 (hidden)
Every symbol is a whole number from -9 to 20 (some are negative!).
Vault code: 4506