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