1. Robertinvites 27 boys and 38 girls to his birthday party. How many friends did he invite?   2. There are 2 cakes. Each cake is cut into 5 pieces. How many pieces are there in all?   3. There are 30 sandwiches to be arranged equally in 6 trays. How many sandwiches will there be in each tray?   4. Dad has planned 6 games for the party. Each game would have 2 winners. How many prizes would Dad give away?   5. Mom places 6 paper plates on the table in 3 rows. How many paper plates are there in each row?