Judith's Great-Grandma
Pat is turning 100 years
old! The family throws her a party, and Judith
helps her open a large stack of birthday cards.
After opening 36 cards, they stop so Grandma
Pat can blow out the birthday candles. Judith and
Grandma Pat leave the remaining 57 cards for
later.
Use an equation to find the total number of
birthday cards in the stack.
