8×6=             72+19=             6÷1=                      180÷180=
48÷8=            45+37=             4×7=                      550﹣550=
500﹣370=         25+75=             55+88=                     3200﹣700=
69+24=            350﹣80=           77+66=                     790+130=
87﹣29=           800﹣330=          99+11=                     257﹣257=
65+35=            69÷8=             92+46=                     46÷7=
50÷6=            0÷8=              39÷9=                     93﹣39=
86﹣68=           1000﹣300=         29+63=                     54﹣45=
7×7=             75÷9=             81÷9=                     800﹣260=
86×0=            470﹣80=           55÷7=                     38+52=
250+630=          77+33=             380+70=                    500﹣490=
66÷7=            6÷6=              95﹣68=                    0×9=
27÷9=            910﹣320=          73+37=                     0÷9=
680+220=          550+260=           25÷4=                     0+9=
57﹣38=           8×9=              47÷8=                     126﹣126=
42+42÷7=         64÷8+70=          500+320+80=                60+60+60=
8÷8×8=          1300+700﹣1000=    30﹣30÷6=                 165﹣50﹣50=
273+35+65=        120+395+80=        90÷90×90=                4000﹣3500+500=
100﹣23﹣77=      165+165﹣165=      65﹣（40﹣25）=            28÷7×6=
800+683﹣600=     45+36﹣45=         5×8÷5=                  （27+36）÷7=
650﹣599+250=     58+97﹣58=         989﹣231+231=              53﹣（48+5）=
7×8×0×9+9×8=   1+2+3+4+5+6+7+8+9=  81﹣9﹣9﹣9﹣9﹣9﹣9=      15+15+15+15+15+15=
89+89﹣89+89﹣89=  64﹣5×8﹣2×8=   147+148+149+150+151+152+53=  1+2+3+4+5+6…+94+95+96+97+98+99=