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addition and subtraction within 30

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    addition and subtraction within 30
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  • Mary has 9 balloons. Jim gives Mary 20 more balloons. How many balloons does Mary have now?
    29
  •  5
  • There are 30 cookies on the table. Mom eats 15. How many cookies are left on the table?
    15
  •  10
  • Peter buys 10 cups. Jane buys 20 cups. How many cups do Peter and Jane have altogether?
    30
  •  15
  • Pat has 12 dogs and 15 cats. How many dogs and cats does Pat have altogether?
    27
  •  10
  • There are 8 ice cream trucks at the park and 10 ice cream trucks in the mall. How many ice cream trucks are there altogether?
    18
  •  10
  • There are 28 apples in the basket. My sister eats 4 apples. How many apples are left in the basket?
    24
  •  10
  • Take 15 lego blocks. Add 9 lego blocks. How many lego blocks do you have now?
    24
  •  10
  • 20 little monkeys are jumping on the bed. 6 fell off and bumped their heads. How many monkeys are jumping on the bed?
    14
  •  10
  • 30 little ducks went out one day. 17 little ducks swam away. Mother duck said quack quack quack quack. How many little ducks came back?
    13
  •  10
  • The old woman baked 27 gingerbread men. 20 gingerbread men ran away. How many gingerbread men does the old woman have now?
    7
  •  10