Revise: In the previous task we learnt that three-digit numbers are made up of hundreds, tens, and ones. We group 10 ones together to make 1 ten, and 10 tens together to make 1 hundred.

Explain to students that they will be playing a game to build this understanding. Show students how to play Filling Boxes in pairs:

1. Students take turns rolling two dice, adding together the numbers shown and collecting that many lollies (cubes). They place their lollies in the "Loose lollies" column of their gameboard.
2. When a student has 10 lollies in their "Loose lollies" column, they stack the lollies together as a roll and place the stack in the "Rolls" column of their gameboard.
3. When a student has 10 rolls in their "Rolls" column, the student groups their rolls into a box.
4. The first player to collect a box is the winner.

Variations:

• The player with the most lollies after a given number of turns wins the game. 
• The player with the fewest lollies after a given number of turns wins the game. 
• The player who is closest to 200 lollies after 20 turns each wins the game.