Space Math Puzzle: Add and Subtract to Color the Robot and Planet

Here are the solutions to the math problems on the worksheet, grouped by the color you need to use.

Step-by-Step Calculations:

1. Grey (2)
* $15 - 13 = 2$
* $9 - 7 = 2$
* $10 - 8 = 2$
* $11 - 9 = 2$
* $14 - 12 = 2$

2. Light Blue (8)
* $16 - 8 = 8$
* $17 - 9 = 8$
* $12 - 4 = 8$
* $18 - 10 = 8$

3. Red (4)
* $13 - 9 = 4$
* $11 - 7 = 4$
* $15 - 11 = 4$
* $16 - 12 = 4$

4. Silver (5)
* $14 - 9 = 5$
* $13 - 8 = 5$
* $10 - 5 = 5$

5. Cream (3)
* $12 - 9 = 3$
* $11 - 8 = 3$
* $10 - 7 = 3$

6. Black (7)
* $16 - 9 = 7$
* $15 - 8 = 7$
* $14 - 7 = 7$

7. Orange (6)
* $15 - 9 = 6$
* $13 - 7 = 6$
* $12 - 6 = 6$

8. Gold (9)
* $17 - 8 = 9$
* $18 - 9 = 9$
* $14 - 5 = 9$ *(Note: The problem on the robot's leg looks like 14-5)*

9. Yellow (10)
* $20 - 10 = 10$
* $19 - 9 = 10$
* $18 - 8 = 10$

10. Blue (11)
* $20 - 9 = 11$
* $19 - 8 = 11$
* $17 - 6 = 11$

Final Answer:
Color Code Key:
* Grey: 2
* Light Blue: 8
* Red: 4
* Silver: 5
* Cream: 3
* Black: 7
* Orange: 6
* Gold: 9
* Yellow: 10
* Blue: 11