CRACK THE CODE · GRADE 2
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
=5
=2
=8
=7
=9
Every symbol is a whole number from 1 to 10. A number in front of a shape means multiply: 2 stars = 2 x star.
Crack these
- 1.2−=
- 2.+=CODE 1
- 3.2+2=
- 4.+−=CODE 2
- 5.2+2=
- 6.3=CODE 3
- 7.2=
- 8.3−=CODE 4
- 9.?+=11Which shape?
- 10.+?=10Which 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 = 5 · triangle = 2 · ring = 8 · heart = 7 · pentagon = 9
Every symbol is a whole number from 1 to 10.
1.2 x pentagon - heart11
2.heart + triangle9
3.2 x triangle + 2 x cross14
4.pentagon + triangle - ring3
5.2 x heart + 2 x cross24
6.3 x pentagon27
7.2 x pentagon18
8.3 x cross - triangle13
9.? + pentagon = 11triangle
10.triangle + ? = 10ring
Vault code: 9373