1、17 - 5 = ( )13 - 2 = ( )17 + 3 = ( )8 - 4 = ( )11 + 3 = ( )19 - 9 = ( )17 - 12 = ( )14 + 4 = ( )9 - 2 = ( )19 - 3 = ( )18 - 7 = ( )9 + 8 = ( )5 + 6 = ( )8 - 1 = ( )7 + 6 = ( )12 - 7 = ( )8 - 6 = ( )15 - 11 = ( )11 - 1 = ( )6 + 7 = ( )17 - 7 = ( )11 + 2 = ( )8 + 11 = ( )12 - 5 = ( )19 - 17 = ( )6 + 9
2、 = ( )10 - 3 = ( )10 - 5 = ( )7 + 11 = ( )8 - 2 = ( )2 + 13 = ( )16 - 4 = ( )18 - 16 = ( )5 + 8 = ( )15 + 4 = ( )14 - 7 = ( )7 - 6 = ( )2 + 5 = ( )8 + 5 = ( )14 - 12 = ( )18 - 4 = ( )13 + 6 = ( )15 - 14 = ( )12 + 8 = ( )18 - 15 = ( )12 - 12 = ( )1 + 8 = ( )19 - 1 = ( )10 - 4 = ( )1 + 14 = ( )10 - 2
3、= ( )16 - 3 = ( )14 - 4 = ( )8 + 7 = ( )19 - 11 = ( )14 - 5 = ( )2 + 10 = ( )19 - 12 = ( )14 - 8 = ( )7 - 2 = ( )14 - 14 = ( )15 - 8 = ( )8 + 4 = ( )19 - 15 = ( )5 + 9 = ( )12 - 6 = ( )7 - 3 = ( )5 + 2 = ( )7 - 1 = ( )12 - 3 = ( )12 + 5 = ( )11 - 5 = ( )14 - 2 = ( )6 - 2 = ( )10 + 2 = ( )18 - 1 = (
4、)8 + 6 = ( )19 - 7 = ( )14 - 13 = ( )12 - 2 = ( )5 - 3 = ( )8 + 10 = ( )10 - 10 = ( )13 - 1 = ( )17 - 4 = ( )16 - 8 = ( )14 - 10 = ( )11 - 4 = ( )13 - 4 = ( )3 + 6 = ( )17 - 13 = ( )11 + 5 = ( )5 + 14 = ( )6 + 10 = ( )19 - 10 = ( )11 + 6 = ( )9 - 6 = ( )20 - 9 = ( )17 - 1 = ( )6 - 4 = ( )2 + 12 = (
5、)17 - 16 = ( )8 + 12 = ( )15 - 12 = ( )15 + 5 = ( )13 + 7 = ( )14 + 6 = ( )2 + 17 = ( )10 - 6 = ( )16 - 16 = ( )5 + 10 = ( )15 - 9 = ( )14 - 3 = ( )11 + 9 = ( )13 - 12 = ( )1 + 19 = ( )7 - 4 = ( )18 - 13 = ( )6 - 5 = ( )5 - 5 = ( )16 - 11 = ( )12 + 1 = ( )18 - 17 = ( )7 + 13 = ( )12 - 10 = ( )7 + 3
6、= ( )18 - 14 = ( )16 - 15 = ( )15 - 2 = ( )3 + 7 = ( )2 + 9 = ( )20 - 3 = ( )6 + 3 = ( )17 - 10 = ( )12 - 8 = ( )3 + 8 = ( )13 + 5 = ( )20 - 14 = ( )18 - 2 = ( )9 + 3 = ( )10 + 10 = ( )16 - 12 = ( )10 + 6 = ( )7 + 5 = ( )18 - 3 = ( )18 - 12 = ( )11 - 2 = ( )17 - 9 = ( )12 + 7 = ( )13 - 10 = ( )20 -
7、12 = ( )14 - 6 = ( )17 - 17 = ( )13 - 3 = ( )2 + 11 = ( )13 + 1 = ( )16 + 1 = ( )18 - 8 = ( )11 + 8 = ( )8 - 7 = ( )20 - 10 = ( )3 + 10 = ( )16 + 4 = ( )15 - 5 = ( )13 - 13 = ( )4 + 7 = ( )10 - 8 = ( )15 - 13 = ( )17 - 11 = ( )10 - 7 = ( )6 + 14 = ( )6 - 3 = ( )1 + 5 = ( )15 - 7 = ( )2 + 16 = ( )15
8、- 4 = ( )17 + 1 = ( )13 - 9 = ( )7 + 12 = ( )9 - 5 = ( )3 + 17 = ( )2 + 18 = ( )19 - 6 = ( )6 + 6 = ( )20 - 15 = ( )15 - 3 = ( )16 - 1 = ( )11 + 4 = ( )19 - 14 = ( )5 + 5 = ( )9 - 8 = ( )15 + 3 = ( )7 - 5 = ( )3 + 14 = ( )16 - 2 = ( )15 - 1 = ( )6 + 13 = ( )9 + 5 = ( )3 + 11 = ( )17 - 15 = ( )3 + 5
9、= ( )17 - 2 = ( )19 + 1 = ( )16 - 14 = ( )6 + 2 = ( )12 - 11 = ( )11 - 7 = ( )16 + 3 = ( )4 + 5 = ( )18 - 9 = ( )9 + 9 = ( )19 - 5 = ( )3 + 13 = ( )12 + 6 = ( )11 - 6 = ( )20 - 2 = ( )13 + 4 = ( )2 + 8 = ( )1 + 17 = ( )17 - 8 = ( )11 - 10 = ( )11 + 1 = ( )15 + 2 = ( )18 + 2 = ( )10 + 5 = ( )5 + 1 =
10、( )14 + 1 = ( )6 - 6 = ( )5 + 7 = ( )15 - 6 = ( )13 - 8 = ( )1 + 6 = ( )19 - 18 = ( )9 + 10 = ( )9 + 7 = ( )14 - 9 = ( )20 - 6 = ( )2 + 6 = ( )7 + 7 = ( )19 - 2 = ( )6 + 4 = ( )3 + 12 = ( )7 - 7 = ( )5 + 4 = ( )13 + 2 = ( )6 + 11 = ( )11 + 7 = ( )8 + 9 = ( )13 + 3 = ( )19 - 13 = ( )18 - 18 = ( )8 + 1 = ( )10 + 8 = ( )1 + 16 = ( )5 - 4 = ( )9 + 6 = ( )1 + 12 = ( )19 - 16 = ( )4 + 13 = ( )16 - 7 = ( )13 - 11 = ( )4 + 9 = ( )1 + 13 = ( )16 - 9 = ( )20 - 18 = ( )20 - 20 = ( )4 + 16 = ( )17 - 14 = ( )6 + 1 = ( )19 - 4 = ( )5 + 12 = ( )2 + 14 = ( )20 - 7 = ( )5 + 11 = ( )14 + 3 = ( )18 - 6 = ( )17
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