1. Debbie made a necklace for her doll using 27 blue beads and 42 green beads. How many beads does the necklace have?   2. Barbara has two dolls. The first doll costs $ 8 and the second costs $ 7. How many dollars do the two dolls cost?   3. Adam empties 28 marbles from a small box into a big box that already contains 29 marbles. How many marbles are now there in the big box?   4. Adam arranges 35 blocks in four stacks. He then arranges 21 blocks in six stacks. How many blocks did he arrange in the ten stacks?   5. Adam likes toy vehicles. He has 9 buses and 8 vans. How many toy vehicles does he have?