CRACK THE CODE · GRADE 2
Starship Navigation Decoder
Solve the addition and subtraction equations using the star symbols to discover the secret passcode.
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
=4
=3
=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.+−=
- 2.3=CODE 1
- 3.2=
- 4.3−=CODE 2
- 5.2+2=
- 6.+−=CODE 3
- 7.−=
- 8.2=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 main control console.
Show answer key (for grown-ups)
Key: heart = 4 · cross = 3 · star = 8 · square = 5 · hexagon = 10
Every symbol is a whole number from 1 to 10.
1.square + hexagon - cross12
2.3 x star24
3.2 x heart8
4.3 x square - star7
5.2 x cross + 2 x hexagon26
6.star + square - hexagon3
7.hexagon - heart6
8.2 x cross6
9.cross + ? = 8square
10.hexagon + ? = 13cross
Vault code: 4736