1. Stacy made a necklace for her doll using 31 black beads and 48 red beads. How many beads does the necklace have?   2. Cheryl has two dolls. The first doll costs $ 8 and the second costs $ 9. How many dollars do the two dolls cost?   3. Graham empties 23 marbles from a small box into a big box that already contains 45 marbles. How many marbles are now there in the big box?   4. Graham arranges 32 blocks in four stacks. He then arranges 47 blocks in six stacks. How many blocks did he arrange in the ten stacks?   5. Graham likes toy vehicles. He has 8 vans and 6 buses. How many toy vehicles does he have?