总题数： 100题
9×8−30= 8×9−30= 7×9−30= 9×4−20= 8×9−60= 70+8 ×2= 30+9 ×2= 2 ×8+80= 90−2 ×30= 90−4×20= 90−2 ×40= 22×4− 10= 90−30×2= 19+2 ×40= 46+2 ×20= 2 × 11+10= 2 ×20+52= 3 ×20+25= 20×2+34= 20×2+59=
8×7−40= 9×8−40= 8×5−20= 5×7−20= 6×8−30= 20+7×4= 4×5+20= 7×2+80= 3×33−30= 90−2 ×20= 60−20×2= 90−40×2= 2×41−80= 3 ×20+35= 14+2 ×30= 20+23 ×3= 44×2+10= 2 ×30+16= 30+2 × 14= 11 ×2+50=
7×9−20= 9×6−20= 9×7−20= 9×9−50= 6×9−30= 80+9 ×2= 9 ×6+40= 42×2−60= 41×2− 10= 80−20×2= 24×2−40= 60−2 ×20= 20×2+11= 2 ×20+48= 3 ×20+24= 13+40×2= 3 ×20+16= 20×2+58= 12 ×3+50= 20×4+17=
5×9−30= 5×9−20= 8×7−20= 9×5−30= 7×7−30= 7×2+30= 30+6×2= 3×32−80= 2×13−20= 90−20×3= 3×21− 10= 21×2−30= 2 × 11+20= 20×2+52= 13 ×3+60= 25+3 ×20= 50+22 ×2= 20×2+30= 40+5 × 11= 23+2 ×20=
第 1 页
总题数： 100题
0−40 ×6= 740−6×40= 150−20 ×5= 500+8×30= 300+5 ×30=
0−70 ×5= 950−80×8= 810−50×4= 20 ×7+700= 70 ×6+200=
670−3 ×40= 770−2 ×30= 200+80×9= 200+7 ×70= 600+2 ×40=
410−70×3= 360−50×4= 40×4+300= 700+30×2= 9 ×20+800=
第 2 页