1. Secret Numbers

2. Secret agents prepare to solve the subtraction problems!
Directions
It is going to take all of the secret agents in this room to crack the secret numbers case. To begin, you will write down the number on the PowerPoint slide on your white board. Next, choose a number secretly between 10 and 99. Add your secret number to the first number you have on your board. DON’T LET ANYONE SEE THE NUMBER YOU PICKED!

3. Only wipe off your secret number and pass the board with the first number and your sum to a person at your table. It is your duty to figure our the missing number. You will have to subtract the smaller number from the bigger number and crack the case of the missing number. Once you know the missing number ask the other agent if that is the correct missing addend. If it is, you now have your first number of your list of secret numbers. Continue playing until you have 5 secret numbers.

4. 85

5. 42

6. 26

7. 61

8. 37

9. Congratulations agents you have cracked the case!