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一级数学凑十法练习题.docx

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1、15 - 6 = 14 - 5 = 13 - 4 =12 - 3 = 11 - 2 = 16 - 7 =17 - 8 = 18 - 9 = 16 - 8 =15 - 7 = 17 - 9 = 14 - 6 =13 - 5 = 12 - 4 = 11 - 3 =16 - 9 = 15 - 8 = 14 - 7 =13 - 6 = 11 - 4 = 12 - 5 =15 - 9 = 14 - 8 = 13 - 7 =12 - 6 = 11 - 5 = 14 - 9 =13 - 8 = 12 - 7 = 11 - 6 =13 - 9 = 12 - 8 = 11 - 7 =12 - 9 = 11 -

2、8 = 11 - 9 =1. 拆小数,凑大数9 + 9 = 9 + 8 = 9 + 7 =9 + 6 = 9 + 5 = 9 + 4 =9 + 3 = 9 + 2 = 8 + 8 =8 + 7 = 8 + 6 = 8 + 5 =8 + 4 = 8 + 3 = 7 + 7 =7 + 6 = 7 + 5 = 7 + 4 =6 + 6 = 6 + 5 = 2. 拆大数,凑小数9 + 9 = 8 + 9 = 7 + 9 =6 + 9 = 5 + 9 = 4 + 9 =3 + 9 = 2 + 9 = 8 + 8 =7 + 8 = 6 + 8 = 5 + 8 =4 + 8 = 3 + 8 = 7 + 7

3、=6 + 7 = 5 + 7 = 4 + 7 =6 + 6 = 5 + 6 = 9 + 6 = 9 + 5 = 9 + 4 =9 + 3 = 9 + 2 = 9 + 7 =9 + 8 = 9 + 9 = 8 + 8 =8 + 7 = 8 + 9 = 8 + 6 =8 + 5 = 8 + 4 = 8 + 3 =7 + 9 = 7 + 8 = 7 + 7 =6 + 9 = 6 + 8 = 6 + 7 =6 + 6 = 6 + 5 = 5 + 9 =4 + 9 = 4 + 8 = 4 + 7 =3 + 9 = 3 + 8 = 2 + 9 =9 + 6 = 9 + 5 = 9 + 4 =9 + 3 =

4、 9 + 2 = 9 + 7 =9 + 8 = 9 + 9 = 8 + 8 =8 + 7 = 8 + 9 = 8 + 6 =9 + 6 = 9 + 5 = 9 + 4 =9 + 3 = 9 + 2 = 9 + 7 =9 + 8 = 9 + 9 = 8 + 8 =8 + 7 = 8 + 9 = 8 + 6 =8 + 5 = 8 + 4 = 8 + 3 =7 + 9 = 7 + 8 = 7 + 7 =8 + 5 = 8 + 4 = 8 + 3 =7 + 6 = 7 + 4 = 7 + 5 =6 + 9 = 6 + 8 = 6 + 7 =6 + 6 = 6 + 5 = 5 + 9 =5 + 8 = 5 + 7 = 5 + 6 =4 + 9 = 4 + 8 = 4 + 7 =3 + 9 = 3 + 8 = 2 + 9 =7 + 9 = 7 + 8 = 7 + 7 =7 + 6 = 7 + 4 = 7 + 5 =7 + 6 = 7 + 4 = 7 + 5 =6 + 9 = 6 + 8 = 6 + 7 =6 + 6 = 6 + 5 = 5 + 9 =5 + 8 = 5 + 7 = 5 + 6 =4 + 9 = 4 + 8 = 4 + 7 =3 + 9 = 3 + 8 = 2 + 9 =5 + 8 = 5 + 7 = 5 + 6 =

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