Jenna collects baseball cards. She groups them in fives, and puts 2 groups in 1 stack. Jenna has 10 stacks of cards. How many cards does Jenna have?
2*5=10 cards per stack, so 10*10 = 100 cards
Jenna groups her baseball cards in fives, meaning each group has 5 cards. Then she puts 2 groups in each stack, so each stack contains 2 x 5 = 10 cards.
Jenna has 10 stacks of cards, so she has a total of 10 x 10 = 100 cards.
To find the number of baseball cards Jenna has, we need to multiply the number of groups of cards in each stack by the number of cards in each group, and then multiply that by the total number of stacks.
Jenna groups her baseball cards in fives, so each group has 5 cards. She puts 2 groups in 1 stack, so each stack has a total of 5 cards in each group * 2 groups = 10 cards in each stack.
Jenna has 10 stacks of cards, so the total number of cards she has is 10 stacks * 10 cards in each stack = 100 cards.
Therefore, Jenna has 100 baseball cards.