一年级数学口算:20以内连加连减混合

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(1)1 + 14 + 1 =

  (2)9 - 6 - 1=

  (3)1 + 15 + 3 =

  (4)4 + 4 + 6 =

  (5)10 + 1 + 6 =

  (6)17 - 13 - 3=

  (7)6 - 4 - 1=

  (8)1 + 4 + 4 =

  (9)10 + 4 + 5 =

  (10)1 + 2 + 5 =

  (11)9 + 1 + 6 =

  (12)4 + 1 + 10 =

  (13)2 + 7 + 10 =

  (14)9 - 7 - 1=

  (15)5 + 4 + 3 =

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