一年级数学下册口算宝典113.docx
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一年级数学下册口算宝典113
80-30=20-9=16-9-3=63-60+20=
88-50=77-2=21+1-9=90-10-8=
80-60=16+5=75+4-2=90-70+18=
40+20=92-4=53-3-1=85-40+5=
20+40=65-0=49-2-7=80-70+4=
50+30=24-9=52-5-2=71-60+17=
98-20=56-2=26-5-9=80-70-17=
90-50=68+3=15+5-5=40-20+8=
30+40=90+1=58+6-5=78-10+3=
30+40=29+5=49+7-5=63-60+18=
50+40=46+8=36+5-4=62-60+12=
80-60=71-8=35+4-5=60-30+7=
90-70=15+1=27+8-7=61-30+4=
50+40=37-2=67-4-3=88-10+11=
84-60=51-9=30-6-5=78-10+8=
60-50=28-3=31+4-9=50-20+12=
30+10=35+8=20-8-7=70-60+12=
92-30=65+7=23+9-7=82-60+1=
67-60=49-9=36-6-2=76-40+9=
97-50=62-8=43+4-7=90-70+18=
50+30=27+6=65-5-9=90-60+11=
40+10=76+1=58-6-8=30-20+11=
63-40=84-4=60-2-5=80-10+10=
80-20=50+5=69+4-3=65-40+13=
90-70=88+5=33-7-1=40-30-6=
76-20=67-0=88-4-7=62-40+4=
90-50=53+8=61-7-4=82-50+12=
40+20=45-3=77+8-2=90-80-17=
62-40=65-9=69-8-9=76-60+11=
50+30=14+9=24+2-8=72-40+12=
90-70=18-5=73+5-4=71-10+7=
20+10=47+4=13+5-1=74-40+16=
40+40=26+8=55-8-5=63-30+20=
72-60=83+8=50+3-4=80-40+19=
84-60=36-3=37+8-4=75-60+19=
90-40=13+9=90-8-4=50-30+1=
50+30=53-8=76+5-4=80-60+7=
20+30=27+7=48+1-1=90-50+7=
80-70=58-4=56-7-9=90-80-19=
90-70=51-7=83-6-2=87-50+20=
71-20=52+8=24-5-5=60-20-2=
50+30=87-9=73+1-8=80-60+9=
68-30=64-8=40-9-4=80-20-7=
70-60=80+4=71+5-9=70-50+14=
96-30=83+2=78+7-8=62-20+15=
80-40=41-3=42+8-3=83-50+2=
76-50=82-3=72+5-4=82-20+5=
92-30=81+1=44-6-3=71-60+19=
20+40=16+7=78-4-9=81-50+1=
90-80=56+2=29+9-6=71-60+3=
30+30=48+4=13-2-9=83-20+8=
50+40=15-2=23+9-5=70-60+7=
20+20=13-5=84-1-4=90-40+14=
10+20=77-7=56+3-2=76-40+10=
88-20=29+4=55-1-2=87-60+19=
64-10=91-0=64-1-3=60-20-17=
80-50=73-4=44+2-5=90-60+4=
50-10=10+9=43+4-5=60-10+4=
90-10=75+9=13-4-3=86-40+2=
93-20=47+1=53-3-2=61-30+8=
70-50=69-8=47+7-8=71-40+13=
60-20=40+4=27-1-7=80-50+14=
76-40=26+3=67-4-3=20-10+12=
40+10=90-6=55+8-3=62-10+16=
87-50=32-7=27+3-3=30-10-16=
50-30=33+8=90+3-5=73-20+12=
10+10=35+1=71-3-5=30-20+1=
10+20=73-2=84-2-5=30-10+10=
20+20=72-9=61-7-2=80-70+19=
30+40=29-5=57-9-1=90-70+16=
60-50=73+2=51-6-5=65-10+18=
50+40=46+6=62-3-7=80-50+2=
10+20=35-7=37+6-6=70-60+9=
71-60=55-7=55+5-2=86-20+17=
78-20=17-0=79+1-1=74-10+2=
60-40=62-5=68+4-8=80-60+12=
73-20=16+4=78+1-4=80-40+12=
50+40=70+3=10+4-5=73-60+11=
77-20=53-6=85-3-5=80-50+16=
50+30=71-4=37-8-3=90-70+13=
90-80=37-0=47-9-2=62-40+11=
20+40=16+9=40-2-3=90-80+3=
79-50=40-2=16+7-1=60-20+18=
91-30=19+3=22+8-3=70-50-12=
90-50=55+2=28-6-8=80-30-1=
90-30=40+8=78-5-5=69-50+2=
40+10=31-9=53+5-2=68-50+7=
10+40=70+1=59-3-9=90-80-13=
60-40=75-0=67-1-4=64-60+7=
67-20=20-9=44+3-9=76-20+4=
50+10=75+2=66-5-2=90-60-3=
99-40=18+9=64-8-2=90-80+1=
67-20=65+3=81-2-9=89-40+13=
73-60=76+6=71-9-3=90-80+14=
90-30=59-9=85+4-5=69-20+16=
70-10=81+8=28-9-7=67-40+11=
70-20=45+1=27+4-5=88-30+6=
20+10=22-4=46+6-9=90-60-19=
80-10=36+9=72+1-9=40-20-11=
70-30=55-3=36-1-1=90-60-18=
90-70=24-0=71-3-5=73-10+4=
10+30=15-1=29-4-9=80-50-11=
90-40=21-2=56+7-8=84-60+7=
80-30=75+8=17+8-2=50-20-9=
10+30=65+9=55+8-6=82-60+5=
96-20=81-5=42-7-6=86-10+5=
80-20=48+7=40-5-5=89-10+18=
90-80=25-1=21-9-2=62-10+7=
20+40=74-8=56-5-9=86-40+11=
70-60=28-2=24-4-5=82-20+16=
50+10=51+1=90-5-8=60-20-4=
30+20=50+8=59-6-5=40-30+15=
30+10=82+1=28-9-1=90-80+1=
74-50=85-3=48-4-1=80-70-18=
40+40=72-8=18+3-8=74-50+18=
20+40=85-5=28-2-7=63-60+18=
81-50=61+6=41-5-5=68-20+4=
86-10=65+8=41+6-4=90-80-10=
64-10=27-9=70-4-4=84-20+14=
90-80=30-0=69-5-9=67-20+1=
90-70=73-5=37+1-5=40-20-6=
98-40=58-0=88-4-7=70-20+17=
94-40=92-0=89-7-8=79-40+13=
88-40=51+6=27+4-8=80-70+13=
94-40=11+1=90-5-3=90-80-13=
70-50=16+8=37+9-6=60-50+17=
62-50=54-8=71-3-8=76-50+6=
86-50=86-3=59+2-9=60-40-10=
40+30=32+9=15-8-3=70-50+12=
40-20=44-4=64-8-2=74-60+15=
50+30=14+1=41-3-6=71-50+19=
70-40=84-5=87+4-7=90-80-7=
90-40=57+6=43+5-3=80-70+17=
40+40=37-7=40-1-2=40-20-5=
99-20=90+6=38-6-2=90-10+12=
80-60=90+9=28+2-3=74-10+3=
40+40=57+2=54-7-1=68-10+2=
30+40=26+6=11+1-4=80-70-16=
80-40=53-9=23+7-3=79-10+5=
90-40=59-4=53+3-5=90-60-7=
96-50=24+2=59-3-7=50-30+9=
93-30=87+8=34-6-6=60-30+7=
72-50=41+1=25+3-7=60-50+6=
10+20=46-2=21-2-5=67-30+6=
84-30=