1. Billinvites 57 boys and 47 girls to his birthday party. How many friends did he invite?   2. There are 19 cakes. Each cake is cut into 8 pieces. How many pieces are there in all?   3. There are 116 sandwiches to be arranged equally in 4 trays. How many sandwiches will there be in each tray?   4. Dad has planned 48 games for the party. Each game would have 8 winners. How many prizes would Dad give away?   5. Mom places 19 paper plates on the table in 7 rows. How many paper plates are there in each row?