文档介绍：77-2×2=70-5×2=34-2×9=5×4+4=6×6+27=64-49÷7=12÷4+75=48-24÷3=12÷4+75=2×8+49=3×5+3=4+9×9=3×6+11=30+5×7=3×6+12=65-2×3=5×6+19=33+2×7=20÷4+5=81÷9+26=48-24÷3=81÷9×6=12÷4+75=7×7+8=17+2×6=73-7×5=15-2×5=32+8×5=42+9×5=32-8×1=64-6×5=73+24÷3= 32÷4+16=72-36÷9=48-24÷3=87-7×5=2×4+69=11+3×9=22-7×2=9×2+4=6×3+3=3×9-6=12÷2-2= 28÷4+83=25÷5×9=20÷5+37=4×3+15=4×6+5=8×8+17=67+12=41+14=3×7+9=7×7-13=35+11=25+11=2×9+6=81÷9×6=72-25÷5=55-41=5×7+11=7+4×8=76+72÷8=3×7+31=35-2×8=41-3×3=83-9×3=81÷9×7=48-24÷3=12÷4+75=9×4-27=2×6-4=7×1-6=2×7-6=48-24÷3=48-18÷3=6×2+20=4×6+48=6×8-24=12-8+59=7×2-7=9×9-66=3×9+13=89-16+25=9×1-3=3×5+46=7×6-25=35-5×2=2+9×9=3×3+67=61-41-18=7×8+45=3×6-7=5×5-17=6×4+34=4×7+21=3×8+39=3×8-14=4×7-4=8×4+41=3×1+67=5×6-16=8×8+19=7×1+29=3×6+11=3×6+12=5×6+19=69-1×3=82-9×1=17+2×6=7×7-6=4×3+15=70-5×2=48-8×2=69-9×3=23-7×9=67-6×9=17-5×3=60-6×5=63-9×6=5+4×4=34-9×3=81÷9×7=82-9×4=54-5×6=18-9×1=7×5+26=56-9×3=83-9×3=32+5×6=71-8×6=6×5+24=8×7-38=9×7-46=64-6×5=7×2+23=42+9×5=2×4+56=24+8×1=3