一年级数学下册口算宝典57.docx
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一年级数学下册口算宝典57
20+40=73-4=77-3-3=90-50-17=
70-50=31+1=42+3-9=67-50+11=
20+20=58-5=37+8-6=74-20+8=
50+10=47+1=81+6-3=80-70+3=
10+30=41-6=42+4-6=60-40-4=
80-20=70-1=81+4-1=69-40+18=
80-40=53-4=32+6-2=80-10+7=
40+40=61-5=42+5-6=79-40+18=
66-40=96-9=50+3-9=90-10-1=
90-60=50+5=15-7-7=80-70-6=
60-40=77+8=80+4-8=70-50+3=
89-40=71+9=24-3-9=78-10+13=
70-50=16+7=86+6-3=80-70+9=
89-30=84-9=81+8-7=80-30-1=
30+40=58-9=55-7-6=70-20+5=
99-20=55+4=81+4-5=77-10+1=
65-50=55-6=17-1-2=61-40+13=
73-30=71+2=48-6-9=90-80-10=
80-60=30+2=19+7-2=63-10+10=
71-30=80+9=56-5-1=77-50+3=
90-50=52+6=30+1-7=90-10+17=
10+10=80-6=14-9-2=80-70-14=
30+30=39+3=17-7-4=70-60+17=
90-80=72+4=22-3-6=90-60+11=
20+30=75+6=44+9-4=80-40+7=
30+30=78-9=13+4-6=50-10-1=
50-20=20+7=83+2-1=72-60+12=
40+10=10+2=61-2-4=40-30-7=
80-70=52-3=62-8-4=90-60-10=
91-10=17+4=86-3-7=50-20+10=
91-50=25+6=35+4-6=60-40-1=
97-30=65-1=47+4-7=70-30+16=
98-20=43+2=19-9-4=70-60+12=
10+30=76-3=53+6-2=90-60-10=
91-60=90+5=39+8-2=50-30+2=
10+20=35-1=79-5-5=70-60+10=
50+10=45-0=50-1-3=90-70+10=
73-20=17+2=72-1-8=73-50+16=
80-60=85-5=83-2-8=80-60+9=
50+30=51-7=38-2-3=90-70+18=
50-20=47+1=90+5-1=90-80+2=
30+40=27+3=65-8-5=85-60+6=
95-30=23-1=82+9-4=67-10+12=
90-80=16+2=56-4-7=50-40-8=
40+20=65+6=10+9-5=71-20+7=
50-40=45+4=74+2-6=69-10+3=
80-70=11+1=53+5-6=69-40+20=
73-10=11+4=48-4-1=20-10-15=
68-20=52-7=41-3-9=90-20-3=
60-10=38-9=13-2-6=64-50+11=
61-10=32+4=53-9-3=90-10+10=
98-10=33-2=39+1-7=90-20-10=
65-10=34+4=85-1-4=90-60+15=
10+30=89-7=40+2-3=80-50-4=
10+40=72+9=32+4-4=80-30+1=
30+30=74+6=29+3-5=70-30+14=
64-50=46-1=13+2-3=75-30+15=
90-20=31-0=65-7-2=82-30+1=
40+40=52+1=24+9-6=76-10+20=
92-40=78+8=79-8-5=74-10+19=
87-20=70+6=89-2-2=63-40+7=
66-60=58-4=54+2-1=72-40+14=
80-50=57-9=32+4-2=60-20-5=
83-50=35+3=20-7-8=68-40+2=
40+10=40+9=88+6-8=80-40+4=
88-20=89-2=18-9-3=30-20-1=
84-40=71-4=65+5-8=90-40-2=
90-70=56-0=40-1-3=85-30+17=
30-20=15-5=36-5-4=83-10+4=
50+20=78+2=90-5-4=77-50+14=
40+40=47+8=33+5-1=79-20+15=
70-40=13-4=63+6-2=90-60+16=
20+30=96-3=66-4-6=90-80+14=
50+40=64-5=67-7-8=90-80+5=
61-10=71+1=63-9-7=69-10+15=
67-10=69-0=25-2-3=90-60-3=
90-80=69+7=34+8-7=90-50+10=
70-10=92-5=45+3-4=90-80-3=
90-20=22+2=75-7-7=90-80-16=
90-50=47+1=34+6-5=80-40-18=
80-70=16+2=24-5-5=84-30+7=
20+30=19-6=24+2-3=90-80+18=
60-40=15-4=89-5-9=80-40+19=
80-60=74+3=52+2-1=70-10-11=
30+20=31+4=28-3-7=65-50+14=
70-30=94-1=24+3-8=87-20+7=
50+30=88-5=45+3-2=90-70+4=
69-30=80+8=50-5-8=90-50+13=
92-60=65+9=57+9-1=82-30+18=
90-20=41+2=76+7-4=64-40+12=
30+20=81-0=80+6-7=71-30+15=
30+30=19+9=18-9-4=61-10+14=
60-40=37-0=61-8-1=84-10+20=
90-70=42+9=30-7-7=90-80-16=
60-40=64+3=70-5-6=73-30+17=
74-30=40-4=44-9-5=61-60+14=
85-60=73-6=26-9-2=85-50+5=
20+10=14-9=42-1-2=76-30+6=
90-80=49+7=56+9-3=87-40+12=
60-30=14-8=61-4-1=70-30+12=
71-40=89+1=19+9-9=80-60-17=
30+10=31-6=85+1-6=72-10+18=
88-60=26-9=68-8-7=50-40+13=
80-70=41+3=44-6-5=70-60-12=
90-60=42+3=44-3-4=90-50-13=
90-80=72+9=18-4-5=83-10+9=
80-70=68+1=69+5-6=80-10-11=
10+10=52-8=19+5-6=70-60+14=
93-60=81-8=42-1-3=40-10-15=
40+40=82+1=22+4-7=30-10-11=
80-60=73+1=86+1-4=73-10+4=
80-70=69+8=18+7-9=83-50+4=
70-60=55+3=61-5-8=70-20+9=
74-50=85+6=30+3-4=65-50+1=
72-20=46+2=38-2-4=63-60+17=
96-40=61-1=74+1-7=90-70-18=
30+10=50-7=88-2-4=90-80+1=
50+40=89+5=48-9-5=70-50+11=
90-80=74+5=47-5-9=63-30+12=
70-50=59-6=29-6-1=80-70-8=
40-10=70-8=80+8-8=50-40-2=
20+40=15+7=76-9-3=70-20+14=
30+40=14-8=45+5-4=80-50+16=
10+40=78+3=28-2-7=81-10+20=
62-50=28+5=67-5-4=81-30+8=
66-60=20-7=63-1-3=90-80-3=
30+10=51-9=17-7-5=50-20-9=
50+30=70-8=16-4-1=61-40+5=
83-30=49+5=67+5-8=77-50+7=
50+20=24+6=43-5-4=71-10+12=
30-20=87-9=75+8-2=90-70-17=
40+10=56+2=81-9-2=77-10+19=
88-60=48-1=67-5-5=70-40-15=
20+40=93-3=41-1-5=76-60+3=
30+20=60+6=73+8-7=76-50+12=
80-50=24+8=82-5-3=40-10+13=
40+30=98-2=49+2-2=62-10+1=
90-80=40+5=35-5-3=76-50+8=
80-40=11-0=10+2-7=40-10+3=
89-10=71-5=79-4-7=90-70-12=
90-60=74-8=39-6-1=87-60+3=
40+30=90-8=16+4-2=60-40+6=
96-30=43-5=89+8-2=80-40+11=
60-40=20-4=84-5-9=81-40+3=
99-60=54+8=41+4-2=66-60+17=
90-70=30-2=33+8-1=40-20+15=
20+20=24+9=50-8-9=40-20+15=
20+10=71-1=10-8-4=70-20+12=
40+10=60-8=90-5-3=69-60+19=
50-20=90-0=53-9-1=90-30-18=
60-50=99-7=55-3-5=90-30+18=
20+30=82-3=82+5-4=81-20+5=
50+20=46-2=23+1-4=70-60-17=
40+40=36-8=23+1-7=69-30+3=
78-10=70+9=75-2-8=67-30+15=
40+20=62+6=67-5-2=79-20+7=
30+40=28+7=72+5-9=66-60+11=
80-60=81+9=40-8-2=90-50-16=
60-50=33-9=30+7-5=90-20+5=
90-80=48-2=49-9-3=60-40+10=
62-20=32+6=76-4-1=80-50+2=
87-20=89+7=71+5-7=72-60+16=
70-40=25+8=23-9-4=71-10+3=
93-50=85-6=15-3-8=60-20+1=
20+40=11-5=41-1-4=85-30+10=
10+20=45+6=90+7-5=66-20+6=
20+20=24+1=73-6-1=80-70-15=
80-50=47+4=36-4-3=64-20+19=
82-10=97-6=33+1-7=61-40+1=
90-20=22+2=43-8-9=80-70-3=
80-10=15-3=47-8-5=76-50+3=
40+40=46+6=20-1-6=50-40-13=
40+40=76+1=26+8-6=89-40+12=
10+40=72-2=64+2-5=82-20+2=
60-40=76+6=47-5-6=90-80-1=
10+30=54+5=29+8-2=60-40+5=
73-30=80+2=38-9-1=90-70-17=
70-20=31+9=30+2-4=77-40+5=
80-70=49-8=38+1-9=66-60+18=
50+40=52-2=88+8-2=90-80+8=
10+40=91-2=32-4-1=66-10+10=
65-60=21-3=89+9-3=61-60+14=
90-50=11-6=89+9-4=84-30+5=
80-20=53+3=28+8-3=80-70-6=
84-60=95-8=23+5-6=78-60+4=
40+20=51+3=81-5-9=50-30+6=
10+20=29-7=57-9-4=66-30+13=
97-10=49+3=17-8-2=60-40+8=
61-60=75-3=24+4-8=90-30+9=
50-40=87+6=14-2-8=30-20-12=
50-40=93-4=14+2-2=70-60-6=
62-10=46-1=79-7-4=80-10-1=
78-20=57+2=65-1-4=90-80+15=
50-30=66-1=48-4-2=65-30+4=
90-70=37+8=54+4-8=73-10+15=
70-50=51-7=41-6-5=66-40+5=
50+30=31-7=16-4-6=74-40+10=
97-20=23+6=37-7-1=80-30+8=
30+40=32-5=24+7-5=90-20+5=
30+40=67-5=15+1-7=87-60+11=
85-50=36+6=14-9-8=64-20+12=
90-80=44-7=21-3-7=90-80+9=
40+30=78+2=57+6-1=61-40+8=
20+30=18+9=22-7-1=87-50+8=
80-30=67+4=43-8-1=73-20+9=
10+20=48-7=71+1-7=90-60+1=
90-60=65-7=23+5-7=86-20+5=
76-40=68+7=79-7-5=86-20+14=
10+10=24+5=51+8-8=62-40+1=
74-30=49+8=81-3-6=90-70+17=
30+30=83+6=78+2-3=79-60+3=
50-40=11-1=53+4-8=67-30+20=
80-50=44+6=88+4-6=67-40+10=
83-30=54+7=82+7-7=70-50+7=
92-60=44+6=43-5-5=79-20+19=
10+40=15+5=14-6-1=82-30+9=
20+20=51-6=63+7-2=89-30+2=
90-40=30+7=25-9-4=72-60+19=
30+30=27+6=72-1-5=61-50+16=
30+40=29+7=28+7-5=90-70-16=
88-50=48-4=68+5-8=67-40+4=
20+30=33+3=41-5-5=80-70+2=
81-30=74+3=77-5-3=80-70+19=
78-50=62+8=58+8-3=90-40+4=
40+20=56+2=56+5-1=90-40-14=
30+10=17-9=54+6-8=70-20+10=
10+10=55+2=46+7-7=66-50+11=
96-20=34+3=90+8-9=74-40+5=
90-70=79-0=89-6-7=76-40+2=
50+20=14+7=12-6-8=50-30+9=
10+30=29+9=70+7-2=90-70+12=
92-30=41+1=74+5-8=70-60-14=
90-10=26+1=71-9-8=89-10+3=
90-70=28-9=88+1-5=68-20+5=
20+40=38-6=66-7-1=80-60-17=
80-10=58+6=82-2-6=70-60-15=
70-60=95-7=46+1-8=62-20+16=
10+20=54-8=81+8-2=75-50+8=
80-70=61+9=57+5-7=73-40+11=
70-40=92-8=17-9-3=67-20+5=
20+40=59-7=62-8-1=70-60+10=
90-30=81-3=47-1-4=60-10+18=
50+20=69-4=44+3-6=78-50+1=
20+40=18-8=43-3-4=90-80+2=
90-60=44+4=30-2-8=84-60+6=
50+40=25+3=26-2-5=90-80-4=
10+20=84-8=51-7-7=70-30+14=
90-20=81+8=24+2-1=90-30+17=
90-30=84-3=19+6-9=89-50+2=
90-80=37-9=36-3-4=66-20+1=
10+30=41-7=29-8-6=30-20-2=
20+10=32-5=75+2-2=63-40+6=
30+10=95-7=47+4-2=70-40+8=
40-20=49-8=70-1-6=78-40+13=
10+20=87+7=63-2-1=80-60-13=
90-80=33+2=59+4-6=90-30-10=
50-40=43+3=47-9-7=30-10-15=
89-40=52-2=86-5-4=90-80-7=
90-60=37+3=52+6-2=90-80+9=
63-40=51+5=65-6-1=69-50+10=
80-70=19+5=37-2-8=80-70+2=
66-10=16-8=90-9-3=90-80-5=
30+40=83-1=52-2-1=80-10+15=
89-40=52+4=65+5-2=73-10+16=
78-30=38-2=23-5-4=40-30-8=
50+10=31+7=32+1-7=73-20+3=
70-40=41+3=70+2-5=86-50+9=
40-20=89+3=18-2-8=70-60+10=
20+10=51+3=41+6-1=86-40+15=
30+20=55+1=77+6-6=80-60-5=
70-10=77-0=83+7-5=78-60+11=
92-30=69-8=51-2-6=90-40-17=
40+40=78-5=56-2-5=78-20+7=
81-40=31+4=50-4-5=90-60+11=
60-20=80-6=55+1-2=70-50+7=
80-20=15+5=15-2-3=90-70+10=
70-10=45+8=71-5-8=90-50-5=
80-60=51-0=65+3-9=82-60+9=
30+30=10+1=73+8-9=70-20-5=
90-80=86+2=67-9-6=90-30+12=
40+30=20+8=46-6-6=90-70-2=
60-40=70-5=42+9-3=74-50+4=
70-10=61-9=71-5-7=77-50+17=
40+30=18+5=39+8-1=76-20+15=
50+10=49-8=72-1-8=90-70-17=
60-50=68-2=76-7-9=89-30+18=
70-10=68+3=59-6-3=63-20+6=
70-40=41+5=72+9-8=90-70+11=
90-80=89+9=58+2-1=90-80+17=
70-50=