文档介绍：17 - 10 +0= 0+6+ 13 = 9+3+4= 11 +2-5= 5-4+ 11 = 14 +5- 10 = 8+2+6= 16 -0- 12 = 18 -5+1= 12 +2-4= 10 +9- 12 = 4+ 12 -4= 7-4+8= 20 -6-5= 7-5+9= 4+5-8= 6-2-2= 11 +6+3= 19 - 12 -6= 10 -0+3= 2+9-9= 13 +1-5= 4+ 13 - 10 = 11 -3-7= 17 -0+3= 4+ 11 +2= 6+1+1= 14 -3-3= 14 -5+5= 10 +8+1= 19 -9-0= 4+0+ 13 = 9+8- 14 = 4+ 14 +0= 0-0+ 14 = 14 +1-0= 2+6+5= 4+2-3= 5+4-1= 18 -7+4= 18 - 13 +3= 18 -8-4= 8-7+1= 1+9-6= 12 - 10 +7= 5+8-2= 9+0-2= 6+8+2= 8+7- 14 = 2+1+ 17 = 18 - 18 +4= 15 - 12 +3= 2+1+2= 10 +4+3= 16 -6+6= 16 -7+0= 6+9-7= 20 -8-7= 7+7- 11 = 7+8-3= 14 - 13 +8= 18 - 13 -1= 7-0+1= 4+ 12 - 14 = 1+ 12 +5= 16 - 14 -1= 10 +6-2= 14 -9+9= 2+ 17 - 11 = 11 +6- 13 = 8-4+ 15 = 16 - 16 +2= 20 - 17 + 14 = 7-1-2= 12 - 12 + 19 = 4+9+5= 14 -9+ 12 = 17 -3+0= 9+5+0= 7+9- 16 = 8-3-3= 19 -2- 12 = 4+4+8= 10 -6+4= 13 -3+8= 19 - 19 +6= 3+ 14 - 12 = 19 - 18 + 14 = 7-0+9= 4+ 14 -2= 7+ 11 - 10 = 13 +0-5= 3+5-4= 13 -8+8= 2+5+ 12 = 16 -3+5= 0+ 18 -0= 8+1+7= 19 -8-8= 4+8-4= 6+8+2= 14 -1+6= 0+7-6= 0+ 17 - 10 = 7+8-2= 0+5+1= 3+ 15 -3= 20 - 16 +5= 18 - 15 + 14 = 7-5+ 13 = 7+2+5= 4+0+ 11 = 14 -4-2= 5+2-7= 7+8-2= 6+9- 14 = 20 -3-1= 9+2-9= 10 +2+5= 9+4+1= 0+0-0= 0+ 10 +7= 12 +2- 13 = 19 - 12 + 10 = 14 +4- 17 = 12 -6+2= 1+ 12 +7= 6+8+2= 12 -6-1= 19 - 15 -0= 0+ 13 +2= 9+0-9= 19 -3+2= 6+1-5= 13 +5- 17 = 20 -7-8= 17 -1-7= 5-1+1= 16 - 10 +5= 16 +0+1= 8+1+ 11 = 2+ 12 -4= 16 +0-1= 11 -2-2= 17 -0- 17 = 8-0-7= 20 -4-5= 0+0+9= 17 +0+2= 13 - 10 +2= 16 -6-8= 11 +0+7= 3+3+4= 15 +0-8= 10 +5+5= 0+5+8= 2+6+ 11 = 5+5+8= 12 +6+0= 12 +3+0= 20 -5- 14 = 6+5+3= 3+3+4= 0+ 14 -3= 10 -8+7= 0+9+8= 0+6+3= 9-0+1= 4+ 11 +0= 16 -6-0= 14 +1-0= 1+5-6= 9-0+ 11 = 2+ 10 - 12 = 14 -6-8= 20 - 11 -8= 16 -1-7= 20 - 19 +8= 18 -9-3= 1+ 17 -6= 4+ 15 -3= 5+0+1= 3+9-4= 18 -7- 10 = 4+6+0= 17 - 15 +7= 8-5+ 11 = 16 - 10 -1= 7+2+ 10 = 1+ 18 - 12 = 13 -9+4= 18 -3- 15 = 12 +4-2= 20 -5-9= 4+2-3= 16 +1- 10 = 4+6+1= 3+4+9= 0+0+ 16 = 14 -9+7= 9-5+3= 15 +2+1= 13 -3-7= 10 +5-4= 0+1+5= 10 -8+ 10 = 20 - 11 -2= 10 +8-9= 1+5+9= 18 -6-1= 6+7-8= 10 +6-0= 18 -5- 12 = 15 - 1