CRACK THE CODE · GRADE 5
Concorde Flight Computer Code
Calculate the missing flight telemetry values using symbol math to reveal the passcode for the supersonic jet's engine lock.
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 20. 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.×−×=CODE 1
- 3.10−=
- 4.÷2+=CODE 2
- 5.×−=
- 6.3+2=CODE 3
- 7.(+)×=
- 8.÷2+=CODE 4
- 9.10−=
- 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 concorde engine starter.
Show answer key (for grown-ups)
Key: triangle = 16 (hidden) · cross = 13 (hidden) · lightning bolt = 20 (hidden) · pentagon = 14 · circle = 9 · ring = 10
Every symbol is a whole number from 1 to 20.
Vault code: 2060