Question

mike had 39 baseball cards. he gave away 21 baseball cards to his brother. how many baseball cards does mike have left? baseball cards

Explanation:

Step1: Identify the operation needed

To find out how many baseball cards Mike has left, we need to subtract the number of cards he gave away from the number of cards he initially had.

Step2: Perform the subtraction

Mike initially had 39 baseball cards and gave away 21. So we calculate \( 39 - 21 \).
\( 39 - 21 = 18 \)

Answer:

18