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Find the missing number

  •  English    6     Public
    Count by tens forward and backward
  •   Study   Slideshow
  • Find the missing numbers.
    60,70
  •  15
  • Find the missing numbers.
    20, 30
  •  15
  • Count by 10 and find the missing numbers.
    65
  •  15
  • find the missing number.
    66
  •  15
  • 10 more than 68
    68 + 10 = 78
  •  15
  • 10 less than 88
    88- 10 = 78
  •  15