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20以内加减法练习(一)
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18- 5 = 17-11 = 13+ 6 = 17- 5 =16-10 =
5 - 4 = 9 - 4 = 16- 1 =7 +10 = 9 - 0 =
18+ 1 = 6 +10 =4 - 0 = 18-12 = 17-17 =
10+ 2 =10-10 = 9 - 0 = 15- 0 = 4 + 1 =
0 +16 = 2 + 2 = 13-12 = 4 +12 =13+ 4 =
6 - 5 = 15-13 = 14+ 1 =3 +12 =
0 + 0 = 0 +17 = 7 - 2 =2 +14 =
11-10 = 11+ 4 = 10+ 4 =
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