Teacher rolls a dice. Everyone chooses where to put each digit as it is rolled. When all the spaces are filled, calculate the addition. Is your number bigger than the teachers?!

40 word problem cards (20 with exchange, 20 without). Use them on their own or shuffle them up to create a game: 2 children pick a card each. They work out the total and the highest answer wins both cards. The player with the most cards at the end is the winner!