文档介绍：16-2×7=         91+85-26=         2×2×2=         2×9×8=         3×8×8=2×1-0=          50+2×8=         14+11-25=       9×5×5=         90-81+2=85-83-1=         8×6+79=          6×2-2=          96-2×4=         52-1×5=4×24×4=       19+6×6=          5×6+82=         1×3+63=         77+66-49=5×70×10=       25×5×9=         20×5+37=        63-16+16=       4+7×7=80+5×7=         51-30+5=         9×40×10=      45+91+29=        72-25×5=7×5×0=         60×6+29=        4×3-0=          0×4+62=         36+69-16=51+37-59=       73+24×3=         1×8-7=          3×0+48=         6×4-19=46+91+80=        60×10+99=        12×2-2=         5×4×7=        71-9-48=96-44+68=        93-7×4=          28×4+83=       12×4-2=         4×4×2=7×90×9=       97-7-66=         60×6-7=         8×27×9=        81×9×1=10×1×8=       30×10-1=         76+57-79=        37+1×5=         90+9×7=32×2×2=        10×1×7=         95-57+44=        53-4×1=        4+4×8=34+4×4=         5×16×8=        92-6×2=        22+32+97=        9×36×9=8×8-0=          168×3×7=       4×6-11=         36×9+69=        0+60-36=13+8×8=        0×35×7=         24-5×5=         4×7+98=         42×6-4=62-10×1=        96-2×3=          43+58-67=        79-38+40=       70×10×5=35×5+31=        93-22+34=         10-63×9=       63-62-0=         20×5-3=47-3×2=         115-9×5=        9×4-10=         60+72×8=        8×4-22=21-2×3=        1×0-0=           13+71+38=        16×1×8=        62-4×4=6×6×3=        18-63×7=         59+74-70=        100-2×1=       8×5+45=9×2-10=         51-19-0=          8×0+49=        3×4×9=         7×0+31=89-76-11=       32×8×6=        42×6×2=        12×4×3=        36×9×5=144×6×4=      9×9-61=          72×8-1=         99-9×3=         8×5-14=70-3+13=         53-37-4=          74+31-16=        6×8+3=         47-11-21=75+5×3=         6×4+61=          40×4-5=        432×8×9=       74-8×7=80×10-4=       90×9×5=        30×5+58=        52+6×0=         62+86+70=30×10+65=      108×3×4=        50-1×1=         15-1-7=          75+24×6=8×2×7=