CRACK THE CODE · GRADE 2
Master Builder Brick Code Challenge
Solve the math equations by figuring out which number each Lego brick shape represents to find the secret combination.
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
=7
=6
=2
=5
=3
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.+−=
- 4.2=CODE 2
- 5.2+=
- 6.+−=CODE 3
- 7.+2=
- 8.++=CODE 4
- 9.?+=8Which shape?
- 10.?+=13Which 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 master builders golden.
Show answer key (for grown-ups)
Key: cross = 7 · ring = 6 · circle = 2 · hexagon = 5 · star = 3
Every symbol is a whole number from 1 to 10.
1.2 x ring - star9
2.2 x circle + hexagon9
3.circle + hexagon - ring1
4.2 x star6
5.2 x star + ring12
6.ring + star - hexagon4
7.circle + 2 x cross16
8.star + ring + cross16
9.? + hexagon = 8star
10.? + cross = 13ring
Vault code: 9646