alex has 7 dimes and three nickels. what fraction of the coins are dimes?

7 + 3 = 10 coins

7/10 fraction of dimes
3/10 fraction of nickles

7 + 3 = 10 coins

7 dimes = 7/10 of his coins.

To find the fraction of the coins that are dimes, you need to determine the total number of coins and then the number of dimes specifically.

In this scenario, Alex has 7 dimes and 3 nickels. To find the total number of coins, you can add dimes and nickels together: 7 dimes + 3 nickels = 10 coins in total.

Now that you know there are 10 coins in total, you can determine the fraction of dimes by dividing the number of dimes by the total number of coins: 7 dimes / 10 coins.

Thus, the fraction of coins that are dimes is 7/10.