CRACK THE CODE · GRADE 2
The Obsidian Fossil Vault
Solve the blocky math equations to crack the redstone lock and open the reinforced chamber protecting the prehistoric dinosaur egg.
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
=9
=2
=3
=10
=6
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=
- 2.2−=CODE 1
- 3.++=
- 4.+−=CODE 2
- 5.−=
- 6.3−=CODE 3
- 7.++=
- 8.+=CODE 4
- 9.?+=11Which shape?
- 10.?+=12Which 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 obsidian chest wrapped.
Show answer key (for grown-ups)
Key: square = 9 · diamond = 2 · triangle = 3 · hexagon = 10 · pentagon = 6
Every symbol is a whole number from 1 to 10.
1.hexagon + 2 x diamond14
2.2 x pentagon - hexagon2
3.triangle + diamond + pentagon11
4.pentagon + hexagon - square7
5.pentagon - diamond4
6.3 x square - pentagon21
7.triangle + square + diamond14
8.diamond + square11
9.? + square = 11diamond
10.? + diamond = 12hexagon
Vault code: 2711