CRACK THE CODE · GRADE 1
Crack the Vault Code
Someone locked the vault with a 4-digit code. Work out what each shape is worth and crack it.
Each shape stands for a number. 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
=8
=5
=2
=4
Every symbol is a whole number from 1 to 9.
Crack these
- 1.+=
- 2.14−=CODE 1
- 3.+=
- 4.++=CODE 2
- 5.−=
- 6.++=CODE 3
- 7.19−=
- 8.−=CODE 4
- 9.?+=13Which shape?
- 10.+?=6Which shape?
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 vault.
Show answer key (for grown-ups)
Key: cross = 8 · circle = 5 · ring = 2 · triangle = 4
Every symbol is a whole number from 1 to 9.
1.cross + ring10
2.14 - circle9
3.triangle + circle9
4.ring + cross + circle15
5.cross - ring6
6.ring + triangle + cross14
7.19 - cross11
8.circle - ring3
9.? + circle = 13cross
10.triangle + ? = 6ring
Vault code: 9543