小学二年级下 100 以内连加连减 3000 题14-(59-57)=16-(87-84)=91-(82-50)=85+9-91=76+9-27=85-(54-49)=73-50-12=72-(7+32)=16+78-41=83-(73-45)=93-(82-39)=56-(76-69)=91-(62-47)=5+45+37=82-(90-82)=13-(86-80)=79-(91-42)=98-(64+24)=90-(1+13)=78-31-14=60-47-6=51-(61-50)=71+16-15=56-(61-45)=31+54+3=0+86+4=96-(12+50)=25+17+6=50-(64-60)=3+11+82=5+83-60=44-(71-38)=18+78-4=83-(88-86)=91-28-49=95-20-17=50-(78-43)=14+51-38=65+8-35=22-(70-70)=85-(9+76)=99-(58+2)=44-(67-36)=23+34+14=22+10+0=66+31-57=33+9+6=32-(73-62)=76-24-6=77-(13+12)=27+42-66=60+33-34=95-(15+45)=15+8+22=83-(87-82)=92-(81-80)=11-(94-88)=92-(49+15)=77-(99-68)=56-(89-47)=57+33-40=28+42+6=84-(80-79)=7+19+32=93-(52+20)=38+55-36=96-(74-61)=84+11-82=29+41-38=72-65-0=42-(99-64)=10+45+42=75+23-65=77-(97-79)=98-23-33=92-60-15=87-(83-61)=86-21-58=28+3+64=97-37-31=4