CRACK THE CODE · GRADE 3
The Mecha-Kitty Blueprint Chamber
Determine the number values for the gear, paw print, circuit, and whiskers to calculate the four-digit combination for the automated feeding pod.
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 12. 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.×=
- 4.×+=CODE 2
- 5.10+=
- 6.5−=CODE 3
- 7.5−=
- 8.10+=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 automated feeding pod.
Show answer key (for grown-ups)
Key: circle = 8 (hidden) · star = 2 · heart = 5 · hexagon = 11 · ring = 12 (hidden) · triangle = 6
Every symbol is a whole number from 1 to 12.
Vault code: 5072