2018-2019 学年45+15x6=75-11x5=56:14=2400:40=710-420=250-5x8=
42+7-29=65:13=3600:60=50x90=6x5^2x4=5600:80=75:15=87:3=22x8x5=30x3+8=25x16=120:24=25x16=12x5=400:4+20-120x25=200:25=48x9=6300:30=10+12-3=036x11=800:16=696:3=690-420=(80:20+80):4=1025:25=840:21=125x6=102+284=70+(100-10x5)=336+70=560:14=48x25=480+290=360:40=25x9x4=390:13=780:20=930:30=40x20=200-33x3=600:15=72-45=23x3=80-25=3020-1010=32x30=362-85=800x30=70+45=12x50=22x30=720:45:2=2100:70=90x2=25x8=6x201=3000+200=612:12=16x6=23x11=17x5=48x125=360+140=300x6=125:25=4x60=35x8=1800:30=540:9=4200-2200=4500:900=80-24=880:20=30x20=220+80=170+90=420:35:2=45x14=400:4=20x8x5=4800:40=25x32=3x90=350-80=600-3x200=14x201=45:15=32+15=160+70=20+20:2=80:16=78:2=28x7=18-64:8=35-25:5=4200:20=45x12=40x60=42:6+20=36+8-40=2500:50=6x85=32x20=40-5x7=2800:40=1