CRACK THE CODE · GRADE 2
Secrets of the Mermaid Cove
Find the number that each seashell and starfish represents to reveal the secret code that opens the sunken treasure chest.
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
=10
=4
=1
=6
=8
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.++=
- 4.3−=CODE 2
- 5.+−=
- 6.2+2=CODE 3
- 7.2=
- 8.+2=CODE 4
- 9.?+=12Which 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 sunken treasure chest.
Show answer key (for grown-ups)
Key: hexagon = 10 · heart = 4 · pentagon = 1 · circle = 6 · diamond = 8
Every symbol is a whole number from 1 to 10.
1.hexagon + 2 x diamond26
2.circle + heart + diamond18
3.heart + circle + pentagon11
4.3 x hexagon - pentagon29
5.heart + hexagon - pentagon13
6.2 x diamond + 2 x pentagon18
7.2 x heart8
8.pentagon + 2 x diamond17
9.? + diamond = 12heart
10.? + heart = 12diamond
Vault code: 8987