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1) Karen's mom bought 11 balloons. On the way home, two balloons flew away . How many balloons did Karen's mom have when she got home? 2) John has 10 pens and Jenny has 8 pens. How many more pens does John have than Jenny?
3) Ten children need to sit round the table. There are only 4 chairs. How many more chairs do we need?
4) Eleven children were playing at the playground. Four children had to go home for lunch. How many children were left at the playground? 5) Eddie had 10 stamps. He used 3 stamps to mail letters. How many stamps does he have left?