小学一年级奥数口算题二
发布:佚名 时间:2011-7-6 10:31:00 来源:京翰教育中心 录入:杨 人气:6896
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小学一年级奥数口算题二
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 =