CRACK THE CODE · GRADE 2
Redstone Door Decoder
Solve the block equations using addition and subtraction to find the four-digit passcode for the hidden vault.
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
=3
=7
=8
=5
=10
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+=
- 2.3=CODE 1
- 3.2+2=
- 4.+=CODE 2
- 5.2=
- 6.+2=CODE 3
- 7.2+=
- 8.−=CODE 4
- 9.?+=12Which shape?
- 10.?+=18Which 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 holding.
Show answer key (for grown-ups)
Key: triangle = 3 · lightning bolt = 7 · star = 8 · circle = 5 · cross = 10
Every symbol is a whole number from 1 to 10.
1.2 x lightning bolt + triangle17
2.3 x triangle9
3.2 x cross + 2 x circle30
4.cross + star18
5.2 x star16
6.circle + 2 x cross25
7.2 x cross + lightning bolt27
8.lightning bolt - circle2
9.? + lightning bolt = 12circle
10.? + cross = 18star
Vault code: 9852