一年级数学下册口算宝典199.docx
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一年级数学下册口算宝典199
83-40=32+9=50+3-1=69-20+3=
90-70=49-7=27+4-7=80-60+17=
81-20=55-2=33+6-1=73-30+14=
70-40=38+5=17+8-9=81-20+2=
78-30=40+6=59+9-7=70-50-13=
40-30=28+3=30+1-9=50-40+1=
20+20=96-7=10-6-6=80-60+3=
70-10=36+6=35-9-2=70-30+18=
80-30=95-2=28-9-4=77-30+5=
90-80=23-8=87+6-6=78-10+4=
10+10=94-4=63+8-1=50-20-2=
93-20=33+4=73-1-8=50-20-17=
75-40=54+5=48-2-6=71-10+9=
30+10=24-0=75+1-2=30-10+17=
94-20=64-2=56-1-3=89-40+15=
50+10=42+4=15+9-6=64-40+13=
90-80=13+8=50-8-7=88-10+7=
75-20=50+7=63+4-9=89-30+8=
80-40=17-0=67+6-2=82-40+13=
70-60=58+9=51-7-3=70-20-13=
96-50=47+6=25-7-7=90-80+4=
70-30=40+2=19-7-2=90-20+9=
81-20=26+4=89+2-7=80-20-1=
90-80=28-9=30+1-2=83-40+17=
80-70=25+3=28-8-7=90-70-6=
90-60=65-6=21+2-7=90-80+11=
90-70=13-9=12+7-6=66-30+17=
96-10=71-3=44+2-4=71-50+10=
90-80=41-6=63+8-8=70-40+1=
50+40=80-3=79-7-9=70-60+15=
70-60=30+8=34+5-8=70-30+5=
40-20=24+8=18+1-5=90-80-2=
80-70=11-4=50+7-6=60-50-10=
64-40=30-6=52-9-7=70-50+17=
70-20=62+3=26-8-6=85-10+6=
40+20=44+2=13+7-1=90-80-13=
79-40=44+1=77-6-6=70-10+10=
90-80=33+6=44+2-2=90-50+7=
40+10=70+8=24-4-9=70-50+12=
20+20=20+6=78-1-5=85-50+2=
50+40=61+1=16-9-5=90-50+16=
20+30=89-6=19-7-5=75-30+18=
91-20=17-6=40-9-7=70-20+17=
68-50=32+7=60-8-7=50-40-14=
83-20=26+2=27-5-1=80-40+1=
67-40=72+8=30+8-9=40-30+11=
70-60=36+7=16+4-7=90-70-12=
78-40=18-5=86-7-8=60-30-11=
83-30=18+3=89+4-8=80-70-9=
90-80=38+5=69-6-2=80-50+17=
62-50=16+1=48-6-9=73-20+3=
30-10=61+8=46+4-4=65-40+8=
93-20=65+7=50-7-9=83-50+6=
50-30=66-5=38+3-3=66-20+10=
99-50=79+1=71-7-6=90-80+13=
74-60=26+6=84+8-9=80-70+12=
68-60=34+6=56+3-1=73-60+17=
97-30=54-2=90-1-4=70-50-13=
30+20=69-2=79+5-1=40-20-2=
20+20=41-3=85+8-6=20-10-1=
66-50=96-4=39+9-1=65-30+12=
71-50=25+5=65+8-9=71-10+10=
40+30=24+7=85+6-2=50-30-18=
90-30=28-4=75-3-2=76-60+12=
82-30=49-5=51+4-8=90-50+14=
86-40=82-4=62-9-5=50-40-2=
71-50=43-1=17+3-1=82-20+4=
20+10=45+3=30-3-6=90-80+10=
80-20=60-0=55-3-4=90-80-6=
68-10=65+7=53+7-8=87-50+4=
20+30=65+4=30+7-5=88-50+3=
80-60=67+4=80+5-7=20-10+19=
30+20=57-6=61-6-2=90-60-15=
60-40=88-3=13+2-3=87-40+5=
20+10=39-0=80+6-4=70-30-7=
94-60=15+2=21-9-6=80-60+11=
20+20=54-8=81-4-7=63-20+9=
75-30=49-5=90-9-7=62-10+13=
20+20=54+4=42+2-6=70-50-15=
70-50=42+5=60+6-6=80-30+4=
10+10=89-8=89+1-5=66-60+15=
62-50=58-4=43-5-6=87-50+2=
91-10=82-0=52-3-5=71-10+13=
10+30=11+3=90-1-6=70-40-4=
62-40=89+2=59-6-2=90-80-4=
98-50=57-8=36-4-9=90-80+8=
70-10=37-7=48-9-9=63-40+14=
70-30=54-0=67+7-8=40-20+13=
50+30=29+2=84-8-6=65-50+11=
20+30=27+1=37+4-6=89-40+10=
77-30=12+5=76+7-9=80-20+8=
91-50=25-3=28+7-6=63-50+10=
40+40=29-4=50+3-3=66-60+13=
65-40=88-7=16-8-4=74-50+10=
82-50=92-3=31-8-3=80-30+10=
40+10=52+4=14+9-2=73-50+8=
93-10=56-4=46+5-4=80-70+11=
10+20=28-6=56+2-6=90-80+4=
80-60=16-4=71-2-6=61-50+5=
50+20=40+6=13+8-7=90-70+7=
70-20=46-9=56+4-1=60-20+5=
87-20=73-4=73-8-6=83-10+16=
40+20=72+5=25-5-7=89-50+5=
80-40=33+7=11-1-9=30-10-5=
70-60=25-5=72-1-5=70-20+2=
40-10=51-8=58+1-2=60-50+5=
50+40=88-5=20+4-9=63-30+14=
10+30=37-6=65-4-7=90-80+14=
90-70=69+1=27-4-2=74-60+13=
30+10=34-8=42+9-3=80-50+16=
40+40=34+8=30-8-7=70-30+17=
70-50=29+9=55+7-1=71-60+2=
80-70=37-4=32-4-1=70-40+2=
90-20=86+6=34-5-8=70-20-10=
10+10=61+8=29+7-5=68-40+15=
50-40=69+2=63+5-2=63-50+3=
88-20=66+1=72-9-3=90-70+15=
70-20=57-3=21+7-2=80-70+11=
50-40=39+2=23+1-3=90-80+17=
50+40=78-7=15-2-7=80-60+9=
89-30=35-4=82+4-6=75-10+10=
83-50=43+3=14+3-1=69-10+20=
40+10=18+3=67-7-7=80-60-16=
81-50=19-3=88+6-6=70-40-11=
60-40=21+8=36-3-8=81-30+15=
50-10=14+3=77-4-8=20-10-5=
20+20=78-6=18+4-1=64-50+5=
80-10=81-5=24+8-1=89-50+16=
30+40=64+8=68+7-8=80-10+5=
91-30=33-9=37+5-4=65-50+11=
30+20=44+8=51-5-2=74-40+3=
89-40=13-0=82+8-6=79-30+5=
10+30=61-2=26-1-9=80-30+2=
98-40=79+5=68+2-9=60-20-1=
80-30=95-7=30+1-6=80-50+8=
90-80=26+7=21-4-3=68-30+2=
90-30=16-8=71+1-8=60-30+12=
50+10=29+6=13+2-9=80-50+8=
77-60=55-8=17+2-7=70-60+9=
70-30=66-9=90+5-8=80-50+3=
97-50=64-7=79-2-4=40-30-17=
80-50=24+1=67-6-9=90-80+11=
50+30=52-1=47-1-2=80-70+17=
20+20=18-8=15+8-1=63-10+10=
66-50=93