All kids love to play battleships so why not play it and learn at the same time.
How to play:
Students partner up.
Each student receives a "game mat" and 2 sets of number 1-9 (will need to be cut prior to playing)
Separate their game mats with a folder and then make up any 2-7 digit number they want using 1 set of the 1-9 numbers. Make sure your partner doesn't see your number. They place the cards on the game mat in the "my number" spot.
Take turns guessing the individual digits of their partner's number. For example play 1 might say, "is there a 5 in your thousands place" at which point Player 2 looks at their hundreds place and sees they have a 3 there. Play 2would respond with "higher" indicating to Player 1 that their next guess for her hundred's place should be higher than 3. If correct guess, player 2 will respond with "hit" at which point Player 1 uses their second set of numbers and places the correct number in the correct place under the "My Partner's Number" place on the game mat. Player 2 flips over the number that has been "hit" indicating it was "sunk". Once one of the players feels they have correctly guessed each individual digit they then have to read the number back to the person in order to officially win the game.