CRACK THE CODE · GRADE 5
Saitama's Supermarket Coupon Safe
Solve these hero-rank symbol equations to find the numerical values and crack the passcode for the locked vault.
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 1 to 20. A number in front of a shape means multiply: 2 stars = 2 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.(+)×=
- 2.10−=CODE 1
- 3.+×=
- 4.10−=CODE 2
- 5.××=
- 6.×+×=CODE 3
- 7.×−=
- 8.×−=CODE 4
- 9.×+×=
- 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 saitamas steel safe.
Show answer key (for grown-ups)
Key: cross = 14 · circle = 13 (hidden) · ring = 11 (hidden) · square = 10 · lightning bolt = 20 (hidden) · hexagon = 18
Every symbol is a whole number from 1 to 20.
Vault code: 2725