数东西

  • 1 到 10
  • 1 到 15
  • 1 到 20
  • 1 到 25
  • 10 到 20
  • 10 到 30

    • 数东西做加法

  • (1~9) + 1
  • (1~9) + 2
  • (1~9) + (1~2)
  • (1~9) + 3
  • (1~9) + (1~3)
  • (1~9) + 4
  • (1~9) + (1~4)
  • (1~9) + 5
  • (1~9) + (1~5)
  • (1~9) + 6
  • (1~9) + (1~6)
  • (1~9) + 7
  • (1~9) + (1~7)
  • (1~9) + 8
  • (1~9) + (1~8)
  • (1~9) + 9
  • (1~9) + (1~9)
  • (1~9) + 10
  • (1~10) + (1~10)

    • 数东西做减法

  • (1~5) - 1
  • (2~5) - 2
  • (3~5) - 3
  • (4~5) - 4
  • (5~9) - 5
  • (6~9) - 6
  • (7~9) - 7
  • (8~9) - 9

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