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- 2022-06-14 发布
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20以内加减法练习一(8.17日) 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 \n= 10+ 4 =14- 3 = 11- 1 = 3 - 1 = 13- 2 =12- 0 = 11+ 0 = 13-10 = 15+ 4 =3 + 5 = 10+ 7 = 0 + 1 = 19-14 =11+ 1 = 17- 1 = 16+ 2 = 16- 4 =