10 More, 10 Less

The game "10 More, 10 Less" is an engaging educational activity designed to help children understand and practice the concept of adding or subtracting ten from multiples of ten. To play the game, participants require a set of dice labelled with multiples of ten, a Tens board which features numbers in tens up to 100, and a collection of counters for marking their chosen numbers. The objective of the game is to reinforce the understanding of place value and the base-ten number system in a fun and interactive manner.

During the game, players take turns rolling the dice and then decide whether to find the number that is ten more or ten less than the number they have rolled. They then place one of their counters on the corresponding number on the Tens board. For example, if a player rolls a 60, they can choose to cover either the 50 or the 70 on the board. However, there are exceptions; if a player rolls a 0 or 10, they can only cover the number that is ten more, and if they roll an 80 or 90, they can only cover ten less. The first player to align four of their counters in a row, whether horizontally, vertically, or diagonally, wins the game. As part of the learning process, players are encouraged to discuss the relationship between adding ten and counting forward, as well as subtracting ten and counting backward, enhancing their mental arithmetic skills and understanding of number sequences.