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简介:
3×5-15= 25+2×8= 37-27+45=
4×7+2= 25÷5= 4×4-15=
6×5= 40-27+20= 2×3+3=
89+4-14= 21÷3+88= 8×5-35=
9×1+10= 80-44+28= 32-49÷7=
6×2+2= 8×7+2= 5×8+40=
7×8-50= 46+54-78= 7×9+8=
77-45+25= 12÷2= 3×1+88=
380+430= 1×9+10= 8×9-2=
3×9-3= 15÷5= 64÷8-6=
3×4-12= 3×8+25= 5÷5=
78-52+12= 3300+1900= 2×5-8=