Tara has 18 coins she puts them into 2 equal groups. How many coins are in each group.
To find out how many coins are in each group, we can use division. Since Tara has 18 coins and she put them into 2 equal groups, we can divide the total number of coins (18) by the number of groups (2).
Dividing 18 by 2 gives us: 18 ÷ 2 = 9.
Therefore, there are 9 coins in each group.