文档介绍：5×5+12= 65-4×5= 3×5+45= 5×2-8=
1×5+27= 4×4+63= 81-4×3= 2×4+33=
5×4-14= 34-1×4= 6×5+25= 4×6+36=
28-2×6= 39-2×3= 7×4+22= 6×7+16=
45-4×8= 8×2+66= 9×5+36= 72-3×9=
6×9+14= 23+7×8= 4×5+16= 9+4×4=
26+9×5= 2×6-5= 6×1+24= 88-8×8=
21+5×3= 6×3+48= 3×3+19= 49-2×7=
7×1+32= 25+8×3= 7×8-40= 85-7×9=
4×9+16= 84-7×7= 67-8×5= 3×4+8=
3×5+7= 81-8×8= 5×8+8= 3×5+17=
50-4×5= 2×4×6= 72-6×6= 66-1×3=
5×7+15= 2×2+8= 5×8+39= 54+1×8=
2×9+42= 54-1×9= 45+3×5= 40+6×6=
9+5×5= 7+4×9= 64-3×7= 6×4-4=
9×8-6= 2×8-1= 3×4+29= 52+1×6=
42-3×7= 7×7+51= 1×2-1= 8×6-28=
27+8×8= 9×9+11= 8×9+5= 94-6×8=
3×3+56= 1×3+6= 31+6×8= 58+2×7=
46-3×8= 5×6-7= 9×2-6= 9×4-19=
6×5-21= 6×6+30= 6×7+65= 6×8-22=
6×9-23= 5×5-20= 50-5×4= 45-5×3=
52-6×4= 77-8×9= 88-5×9= 7×9-26=
25+5×3= 36+5×8= 79+5×2= 74-4×5=
25+6×3= 26-2×6= 45+3×4= 85-8×5=
96-9×6= 5×6+23= 8×5-25= 49-5×8=
27+8×6= 4×9-10= 88-7×9= 55-8×3=
7×6+56= 8×9-70= 8×8-54= 26+5×8=
25+4×6= 59-4×6= 9×6+32= 8×9-8=
51-5×6= 75-5×9= 25+5×8= 36-6×6=
85-8×5= 77-8×9= 7×9-12= 55-4×5=
82-8×9= 19+5×8= 5×7+50= 8×7-58=
4×9-25= 16+7×2= 58+2×9= 55+5×5=
65-5×7= 23+2×9= 49-6×1= 54-5×3=
4×9+56= 79-7×3=