小开云kaiyun(中国)一年级奥数口算题精选

时间:2013-03-04 10:23:00   来源:开云网页版     [字体: ]
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7 + 6 = 5 + 9 = 8 + 7 = 5 + 8 =
  7 + 9 = 9 + 8 = 5 + 7 = 8 + 4 =
  9 + 3 = 9 + 9 = 3 + 8 = 6 + 5 =
  7 + 4 = 8 + 8 = 6 + 8 = 2 + 9 =
  7 + 7 = 3 + 7 = 6 + 6 = 6 + 9 =
  8 + 6 = 3 + 8 = 5 + 5 = 7 + 8 =
  12 – 4 = 15 – 6 = 14 – 7 = 11 – 8 =
  14 – 9 = 15 – 7 =   15 – 9 =  16 – 7 =
  13 – 6 = 16 – 9 = 11 – 5 =   12 – 8 =
  11 – 7 = 18 – 9 = 17 – 8 = 14 – 8 =
  13 – 7 = 15 – 8 = 14 – 5 = 11 – 9 =
  17 – 9 = 17 – 9 = 11 – 5 = 13 – 8 =