CRACK THE CODE · GRADE 7
The Grand Slam Locker Cipher
Solve the mathematical equations by determining the numeric value of each baseball icon to unlock the championship trophy display case.
Each shape stands for a number. Work out the missing ones first, 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
Every symbol is a whole number from -9 to 20 (some are negative!). A number in front of a shape means multiply: 2 stars = 2 x star. A small 2 after a shape means square it: star^2 = star x star.
Find the missing values
Some shapes in the key are missing. Use these equations to work them out, then write them into the key. Take them in order.
Crack these
- 1.×=
- 2.2−=CODE 1
- 3.(+)×=
- 4.3−2+=CODE 2
- 5.(+)×=
- 6.×=CODE 3
- 7.×−=
- 8.+×=CODE 4
- 9.3−2+=
- 10.×(−)=
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 reinforced glass championship.
Show answer key (for grown-ups)
Key: ring = -1 · pentagon = -9 · moon = -4 (hidden) · hexagon = -3 (hidden) · lightning bolt = -6 · triangle = 6 (hidden)
Every symbol is a whole number from -9 to 20 (some are negative!).
Vault code: 5546