小学一年级数学下册口算练习题大全80.pdf

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1、小学一年级数学下册口算练习题大全8080 70=55+5=8 1-5-2 =71-30+110+30=19+2=41+6-4 =70-50+1250+20=53+6=3 5-7-2 =62-30+1770-30=60-2=50+2 7=68-60+777-50=23+1=19+5 7=80-40+240+30=60+1=7 0-6-6 =61-60+1010+20=23-5=83+6 5=9 0-6 0-997-10=98-0=66 94=83-20+430+20=21-2=44 66=8 0-6 0-965-60=88+6=76-9-1 =65-60+1860-40=42-1=84 2 3=

2、80-70-1675-30=78-2=8 5-2-4 =80-10-1081-20=91-1=55+4-4 =71-60+2080 10=71+6=53+12=84-10+720+20=26+7=8 4-3-8 =72-10+370-10=9 0-9 =33+7-7 =6 0-2 0-950+20=48+8=6695=62-10+1450-20=15+1=59+6-6 =78-40+910+40=74 8 二77+3-1 =79-20+1770-10=58-5=3 7-9-9 -60 2049720=67-7=16 72=84-50+1650-20=50+2=4 2-7-8 =77-40+16

3、61-40=23-8=545 3=70-20+377-60=28-2=84 89=76-50+430+30=18+6=1 8-3-9 =70-30=23-6=4 3+4-8 =2 0-1 0-820+20=13+8=6016=67-40+1890-10=64-2=3 4-5-9 =90-80+1940+30=97-3=2 3-3-2 =70-30+198-60=40+2=2 2-9-1 =62-60+189940=24-7=78-5-1 =84-60+590-50=34+5=16-2-3 =83-10+250+40=13-8=2 6-7-4 =76-60+790-60=58-7=34+3-9=

4、70-50+1970-50=35+6=3 5-2-4 =64-60+199080=81+1 =4 9-2-5 =80-60+670-60=91-2=2 1-7-3 =61-10+366-30=88-1=34+3-7=60-30+290-70=63-4=18+3-9=68-60+1510+20=17-1=6349=70-30+128030=20 0=46+28=78-50+1920+40=98-6=12+3-7 =89-10+640+30=21-5=76 6 2=50-20-1590-40=15-8=89 72=90-80-1390-20=90-5=8 2-3-1 =8 0-7 0-770-20

5、=14-1=21+8-6 =74-30+1140+30=49-9=32+8-4 =73-40+740-10=76-1=86+8-1 =68-20+1680-20=86 8 二29+7-4 =90-80-1620+20=36+8=1 0-7-3-60-30+1890-80=38+1=23+3 5=72-40+480-20=23+2=5 2-7-5 =73-40+1620+20=40-9=83 6-1 =64-30+884-10=86+5=1 8-1-6 =82-30+2090-70=74+3=21+8-8 =88-30+1310+10=82+9=45 54=83-10+492 30=86+2=6

6、1+83=90-70+240-10=85-6=6 0-6-7 =66-40+730+40=49+3=33+65=9 0-8 0-677-60=37-7=72+2-7 =73-30+1467 50=87+2=60+4 1 =70-50+950-20=43+4=70+7-9 =67-20+810+40=12+1=8 0-3-3 -80-40-1840+40=44-8=30+3 3=50-20+1974-50=68+8=85+6-2 =90-30+860-50=83+4=8 2+1-7 =80-30+1580 30=74+9=70+48=67-10+1940+40=30+6=82+6-6 =50-3

7、0+1890-70=88-2=50+6 7=80-60-1320+10=34-1=7 0-2-6-60-50-1320+20=16+9=33 56=78-60+1620-10=37+5=6 9-3-4 =70-40-1890-80=89-9=3 0-9-5-63-50+1860-40=67+1=1 3-3-5 =84-40+870-50=90-8=3 2-4-8 =80-70+1461-40=64+6=38+4-7 =70-30+580 30=34-4=10 96=90-80+470-40=46-9=5 7-7-3 =90-80-1565-30=86+9=73+4-2 =63-10+1910+

8、30=74+4=3 3+1-1-9 0-8 0-630+10=79+9=10+7 1 =68-60+810+20=13-9=25+4-3 =90-80+750+30=28+6=28+2-7-90-80-1370-10=61+6=6 9-6-5 =8 0-2 0-920+20=42+4=4 7-1-8 =6040 486-10=66-3=4 6-5-9 =60-50+1520+40=44-6=36+97=80-70-1479-60=24-7=3 8-4-1 =75-30+2020+10=87+3=6 0+1-3 =88-50+1170-1 0 =7 1-7 =76+9-4 =6 7-2 0 +7

9、8 3-5 0 =90+8=2 4-3-9 =9 0-4 0-140+10=21+3=63 5 5=71-10+910+40=64+1=16+5-3-60 501130+40=27+9=12 59=7 3-6 0 +89 0-4 0 =7 7-8 =55+7-9 =7 0-4 0-1 170-50=66+3=65+8-7 =70-10+29 0-5 0 =49+1=33+5 1=6 0-3 0+1 04 0-1 0 =85+5=5 4+8-4 =79-40+1490-50=2 6-9 =4 4-6-1 =8 6-40+1150+30=17-9=4 1-7-1-60-40+180-60=21+7

10、=63+93=81-40+1580-50=24-8=8 6-4-5 =63-20+980-30=87-0=6 3-5-8-79-10+630-10=86-8=25+13=80-60+1198-60=82+7=7 4+8-3=89-60+740-20=24-4=40+34=90-80-1290-40=80-9=51+8-5 =78-60+1240+40=1 8-4=47+2-4 =60-20+770-50=55+9=20+8-7 =60-50+690-80=32+3=49+7-5-60-50+810+10=11-9=11+32=65-10+1490-40=24-8=40+2-8 =90-40+8

11、90-30=38+1=4 2-7-1-90-40+1040+20=55-3=83 7 5=90-60+530+10=11+5=85+9-4 =65-20+2082-20=51-9=8 3-5-1 =7 0-1 0-664 50=91-2=76 72=61-60+990-20=74-6=8 6-6-2 =76-30+386-30=75-0=81+6-1 =88-20+920+40=89-0=36 5 3=80-30-1620+40=53-2=37+86=85-40+1790-60=48-3=4 3-4-9 =81-60+698-30=12-5=4 4+5-4 =63-50+1510+20=55+

12、1=28+4 1 =90-80+872-30=46-1=49+7-2 =67-50+1690-70=66-5=40+8-2 =90-80+260-50=47-3=69+2-6 =67-30+330+30=81-0=75+4-7 =40-20+160-30=52 1 二47+9-2 =70-10+1040+10=1 6-4=2 4-3-9 -9 0-8 0-97120=72 1 =34+3 1 =64-60+1360-40=75-6=53+4-2 =40-20+586-60=58+3=43+3-5-80-20+1430+30=31-7=50 2 1 =82-30+1880-30=69-8=7 7

13、-4-7 =83-40+1190-80=68-7=7 6-5-9 =60-30-1972-60=23-3=67+2-9 =86-30+1275-40=41+3=60+5-4 =82-10+1186-20=53+4=33+6-8 =72-30+2080-30=17+8=3 4-3-6 -90-10+620+40=32-7=54+83=75-50+950+40=20+2=9 0-2-8 =76-20+165-10=41-9=3 0+1-5-8 0-6 0-37920=23+6=60+4-4 =84-30+1220+20=56 5=8 0-2-7 =89-20+1595 50=91-1=72+3-8

14、 =61-10+1580-70=43+1=2 0-3-5 =87-50+2081-20=9 9-4=5 4-7-7 =80-10+1220+30=29 3 二1 5-4-3 =80-30+180-20=52+6=72+2-7 =8 0-7 0-550-40=82-4=31+9 7=77-50+450-20=94-7=8 1-6-4 =90-30-1160-30=19+8=3 5-1-8 -67-60+169420=64+3=50+2 7=9 0-8 0-430+20=83+6=51+2-9 =73-40+1990-50=53-3=4 9-3-9 =90-60-1390-10=14 5=2 5-

15、1-7 =3 0-2 0-140+30=41 4=60+6-1 =75-50+1960-40=87+9=74+6-6 =66-20+790-80=79+1=5 0+1-9-9 0-6 0-58030=56+1=87+2-7 =68-40+1860-50=90+3=9 0-3-5 =80-60+681-60=85+7=35+5-4 =61-10+120+30=37+9=59+9-5 =90-70-1370-50=73-5=23+6-1 =63-60+197-20=35+4=265 7=50-40+1240+30=88+9=25+8 5=70-30-1170-50=69-9=4 5-9-5 =79

16、-40+1661-20=21+3=54+5-1 =76-50+28 0-5 0 =6 2-0 =8 5-3-4 -6 0-1 0 +820+40=8 0-6 =39 7 3=8 6-2 0+1 68 0-3 0 =6 8-0 =1 4-6-2 =8 0-4 0 +276-3 0 =9 2-2 =5 1-3-1-8 0-3 0+1 39 3-6 0 =4 2-6 =7 3-4-6 =6 3-6 0+1 36 0-3 0 =40+2=7 4+5-5 =60 50 650-20=14+2=34+64=6 8-2 0+1 86 7-4 0 =8 8-6 =23+22=5 0-1 0+1 350+20=

17、3 3-7 =1 2-6-4 =8 5-1 0 +590-70=35+4=8 6-4-7 =8 2-4 0 +49 0-8 0 =7 2-4=79+7-8-8 4-1 0+1 29320=3 5-7 =4 8-9-5 =9 0-8 0+1 950+30=29+2=32+3-3 =6040 120+10=67+3=63+4-5-8 6-4 0 +88 3-5 0 =1 8-7 =5 1-2-7 =8 0-7 0 +510+30=45+2=38+4-8 =2 0-1 0 +97 0-1 0=79+3=5 1-8-5 =70-40+116850=4 6-8 =29+7 3=8 0-7 0+1 86

18、0-1 0=37+2=4 2-3-1 =5 0-3 0-1 250+20=12+3=4 4-3-6 =60 501630+40=61-9=6454=83-10+1190-10=35+3=17+28=73-40+640+10=71-8=18+8-1 =80-70+330+40=29-7=73 6 7=62-20+1240+30=47+6=7 4-1-7 =90-70+750+40=28+9=43+1-6 =90-80+1960-40=80-9=21+3-3 =88-20+166 50=57-3=21+4 1 =9 0-7 0-860-50=70+7=1 4-2-9 =80-50-1875-20=

19、61+2=70+6-1 =80-30-1260-50=73+4=42+5-8-60-30+880-40=86+3=13+86=74-50+490-80=53-0=42+8-9 =62-30+720+10=37+6=46 3 6=90-20-1480 30=38+3=5 8+1-7=90-80-1978-50=43-5=6 9-3-8 =5 0-2 0-48830=69-6=1 1-7-7 =70-50+97220=77 1 =77+88=84-60+1490-70=70+1=62+1-1 =86-20+1180-70=55-1=1 1-2-4 =30-20-1840+10=49-9=1 1-4

20、-6-40-30-1470-40=59+3=3855=66-20+2091-30=87+4=2 4-4-2 =70-30+65040=51-8=8 9-2-9 -79-50+870-30=81+6=2 7-9-7 =89-10+2090-70=96-6=7 4-4-5 =90-60+1865-40=57+4=81+64=9 0-6 0-850-20=14+7=82+7 3=9 0-6 0-280-50=43-7=2 0-2-8 =81-60+1830+10=86-9=8 2-2-3 =9 0-4 0-540+10=6 5-4=50 6 6=65-20+310+20=69-0=4 4-8-5 =

21、85-20+1950+30=35+2=4 6-3-4 =9 0-7 0-174-40=441=30+6-9-81-50+1140+10=15+3=45+4-6 =81-50+1490-80=49 4=80+3-9 =66-10+770-60=64+3=6452=50-10-1592-10=26+6=19+1-9=62-40+1740+10=22+9=7 3-7-5 =90-70+1761-50=661 二31+1-4 =90-70+320+30=91-7=45+7-4 =90-70+1940 30=46+7=65+5 1 =90-30+1630+20=40+7=1 7-1-9 =80-10+5

22、80-20=12+7=30+4 7=82-30+2010+20=66+5=24+8 1 =63-50+1390-70=17-9=2 3-7-7 =40-30-1630-20=33+8=45+6-8 =88-40+1874 30=34-8=8 9-1-9 =80-70+230-20=76+4=1 3-4-2 =80-20-1791-60=57 8 二5 5-3-2 =73-10+282-50=41+9=40+2-8-82-60+210+10=80+4=2 2-3-9 =65-40+1790-50=26-8=4 7-5-5 =60-10+1580-60=88-9=49-6-1 =60-50+196

23、-40=34-6=47+99=68-40+1540+20=21+7=89+5-5 =20-10+1191-10=19+8=73+1-5=90-50+150+30=12+2=71+6-5 =80-60+1489-20=90-2=26+1-7 =40-10-1461-40=95-1=8 3-5-9 =71-20+890-40=14+6=27+5-1-62-20+116460=89+3=66+99=62-60+1680-70=72-3=7 0-7-8 =90-50-1484-10=28-7=80+5-8-60 4049920=63-1=65+9 7=87-20+440+40=69-2=90+1-3

24、=70-60+1530+20=95-2=2 1-2-2 =84-30+792-10=95-4=38 82=71-50+1260-50=62+3=2 4+8-5 =9 0-3 0-650+20=43-7=4 9-7-1 =77-60+810+40=25+1=7 4-3-4 -60 501670-50=5 4-2 =33 56=3 0-1 0-730+20=54+2=5 5-4-2 =8 0-2 0-1 570-5 0 =7 1-9 =594 6=50 10440+20=5 7-4 =53+4 3=7 3-2 0+1 675-4 0 =4 3-5 =4 8-9-7 =9 0-8 0 +138 0-

25、3 0 =4 5-7 =25+76=75-50+2020+10=76+4=43+7 1=8 0-4 0-240+20=545=60+9-1 =6 8-2 0 +1176-4 0 =46+4=7 3-8-2 =79-2 0+1 530+30=78+1=33 7 5=9 0-6 0-940+10=64-4=80 7 3=7 0-6 0-295-60=85-9=46 44=81-40+187540=80+5=2 6-8-9 -40-20+148120=73+2=45 5 3=90-80+661-20=40-6=1 8-6-2 =86-60+920-10=41+2=7 8-4-1 =64-10+568

26、60=17+4=76+3-9 =64-50+492-40=14-2=90+5-4 =67-60+2070-20=74 0 二68+16=81-30+138 0-6 0 =9 7-6 =75 2 8=60 30 68 3-1 0=12+2=6515=8 3-4 0 +206 3-1 0 =29+6=51+3-7 =7 7-4 0 +26 8-2 0 =7 4-7 =2 3-6-7 -70-60+740 10=11+9=30 2 3=70-6 0+1 440+10=37+3=2 2-1-3 =9 0-7 0-1 890-60=87+4=4 8-1-3 =9 0-2 0-99820=40+4=1 5

27、-4-7 =8 0-5 0+1 86 0-1 0 =18+5=7 7-7-9 =6 1-2 0 +392-20=2 5-8 =2 1-2-5 =6 6-2 0 +350+10=45-2=5 8-9-8 -89-50+1781-10=41+2=34+94=78-40+1130+40=79+3=78+1-2 =80-70+1069-20=54+6=90+7-3-90-80+1330-10=49+8=13+2-4 =69-10+370-50=37-2=26+6-4 =85-60+710+30=73-0=74+2-3 =8 0-4 0-550+10=48+7=15+9 7=82-40+1030+30=

28、26-2=1 9-2-9 =76-30+775-30=45+3=42+2-4 =30-10+57540=49+3=7 2-1-9 -76-10+1990-70=46+8=74+2-4 =40-10+683-50=57+6=73+5-3 =69-10+1594-20=97-5=77+4-6-30-20-1290-80=90-2=6 3-4-3 =73-10+1288-40=62-1=17+5-2 =64-50+1063-40=19-5=1 9-5-8 =75-20+370-10=89+2=76+4 3=85-60+1477-30=25+6=3 2-2-2 =82-30+720+40=20 6 二

29、17+5-9 =62-30+1620+30=59-3=1 7-2-8-79-60+168950=261 二8 9+1-6 =68-50+1695-50=50+5=6 3-4-1 =84-10+1490-80=15-1=8 0-4-8 -67-10+390-60=12+3=42+78=80-60-1299-30=20-7=27+1-6 =66-60+1199 10=50-6=72+64=75-50+310+10=29-9=76+1-4=70-60-1810+30=25+3=67+2-7 =71-10+1850+10=92 3 二6 8-3-1 =90-50+1168-40=88-0=8 4+9-

30、7-72-10+1130+20=74-8=6 6-1-7 =90-80-1880-70=11+7=5 5-5-3 =70-50+320+30=2 3-4=17+7-1-60-50-1820-10=35-5=69+6-7 =71-50+1680-40=88-5=65+5-7 =88-20+1910+20=41+6=5 3-6-1 =73-20+430+40=14+2=44+98=80-20+1569-60=68+4=58+2-5 =61-50+1150+10=53+1=85+8-5 =66-10+320+30=74+3=15+1-4=87-20+390-70=93-4=5 7-8-7 =90-6

31、0+1450+30=4 3-4=2 0-8-9 =90-70+630+10=26+5=1 5-8-5-90-70+1180-70=81-4=3 0-5-4 =6 0-1 0-750+30=84-1=5 8-6-2 =70-60-1690-10=90-1=33+8-9 =50-40+910+20=59+3=24+56=76-50+760-40=12-2=2 4+9-3 =71-20+799-60=60+5=3 1-9-7 =90-70-1275-50=2 4-4=2 4-1-8 -90-50+18020=89-5=19+1 1 =60-50+1261-60=61+6=4 7-3-6 =90-70

32、-1987-50=77-6=1 1-3-8 -9 0-6 0-740+10=86+7=1 8-3-1 =90-30+280-30=44+4=7 6-9-6 =77-60+640+30=83+3=7 0-9-2 =90-20+126160=33-0=59 5 3=40-20+1090-80=29+8=6 1-2-9 =88-40+1330+10=20+5=75+6-8 =78-30+630+10=36+6=67+2-1-76-40+974 50=88-0=82+3 7=70-10+420+30=64-2=5 6-7-8 =79-10+1676-10=52+8=3 4+7-9-80-60+1260

33、 30=80+5=6 5-2-6 =90-60-1678-40=22-7=52+7-3 =74-20+1010+30=38-1=6 6-9-6 =90-20+840+20=28-6=5862=72-10+120+20=17+3=1 1-4-1 =8 0-3 0-440+40=50 3 二1 7-1-2 =40-30-1390-70=12-8=6 3-5-8-83-60+2072 30=61-3=47+2 3=70-60+1430-20=43+7=6 4+9-5 =7 0-2 0-284-40=77-0=67+3-5-77-40+78020=89+7=86+54=75-30+1150+20=63

34、-9=87+2-2 =61-30+189080=14+3=3 9-9-9 =80-50+164 50=64 6=4 6-1-2 =50-20+780-60=75+4=8 3-6-3 =70-60-1350+30=11-5=1 3-4-4 =79-30+1010+20=8 5-4=23+5-5-90-80+1240+40=87+2=26 62=67-60+1880-20=84+6=8 7-9-9 =90-80-1050+10=12+1=8 2-7-2-73-20+1091-10=16-9=81+1-4 =81-40+1890-80=50+8=3 1-5-5 =69-40+1340+20=71+2

35、=5 4-8-2 =9 0-8 0-690-70=98-6=53+15=61-10+1780-70=52+3=2 3-8-7 =90-70-1280-30=83+6=8 5-5-9 =84-60+185040=77+8=1 0-5-5-4 0-1 0-870-50=71-1=1 3-4-9 =87-50+2064-10=61+7=3 4-9-4 =62-20+490-80=9 2-4=3 9-6-7 -8 0-7 0-630-20=30+5=21+7 5=80-70+1530+30=59+8=4 9-8-7 =70-60+1070-50=43-4=3 4-1-2 =82-40+128950=7

36、0-3=44 9 1 =8 0-1 0-160-50=97-0=43+9-6 =80-40-1230+40=44+8=1 5-9-8 =60-30+1220+10=1 5-4=47+5-2-82-10+1580 10=87-6=16+4 3=82-40+1850-40=89-9=1 7-7-9 =60-50+1283-20=55-1=5244=86-20+1880-60=23+8=75+94=80-70+590-80=15-6=2 7-6-9 =80-50+89080=45-8=2 1-9-8 =8 0-3 0-890-40=26 2=76 2 3=73-10+1750-30=30-6=43+

37、9-1 =50-30+790-70=62 0 二1 9-7-8 =68-30+1890-60=29+7=1 9-6-7 -75-10+1370-60=74-6=41+5 3=50-40+1262-40=28-9=90+2-6 =88-20+1872-30=61-3=4 2+1-3-9 0-5 0-850+10=34+1=71+6 1 =90-80+1577-40=69+4=63+4-9 =73-10+1290-50=72-9=1 0-7-4 =9 0-8 0-910+10=33-6=47+5-4 =9 0-8 0-730+40=88-2=82+1-2 =90-60-1250+40=41+2=7

38、 6-9-1 =70-40+120+40=40+7=6 3-1-5-80-70-1250 10=82+2=41+6-7 =62-40+1180-60=55-2=53+8-8 =88-30+660-10=29+6=47+2-8-74-40+1150+40=36-7=89+4 3=68-50+530+10=30-1=3 0-9-9 =70-10-1250+40=53-5=28+3-2 =6 0-2 0-267 10=41+3=5 7+1-7=9 0-6 0-890-80=5 0-4=5 4+4-6=73-20+940+10=40-8=33+8-1 =60-40+677-60=31-9=3 4-1-

39、2-70-60+46160=51+1 =67+8-5 =74-60+1430+20=12-0=88+1-6 =85-40+320-10=74+4=2 5-1-1-73-40+1865-40=76-4=20 2 3=60-10+710+20=60+2=39+4-9 =66-10+210+20=78-4=49+2-6 =68-10+176850=40+8=56+1 1 =80-20-1772-20=32+4=25 6 6=70-20+768-40=67+5=3 9-7-8 =87-50+1640+10=38+7=5 6-8-7 -50-20+587 30=48-3=17+7-4 =85-20+13

40、10+40=86-7=67+7-9 =50-40+1380-70=55+4=1 8-4-9 -63-60+1430+40=75+5=4 0-7-4 =60-50+1390-60=42+4=7 6-2-1 =50-30+610+10=48-2=44+6 7=9 0-7 0-96520=49-5=62 6 5=80-60+1864-40=66-1=51+6-8 =67-60+1575-60=42+4=55 59=80-30+1596-40=18+2=85+9-6-90-50-1270-20=57-5=7 8-9-4 =77-40+588-30=79+7=4 4-3-8 =76-20+2063-40

41、=20-2=25+5-6-89-60+1666 30=48-9=3 1-5-8 =74-40+1930+30=77+8=7 9-3-1 =86-30+1420+40=68-1=29+3-2 =60-40+180-70=17-5=29+46=40-20-1230+10=86+2=7 9-1-9 =90-60-1640+30=77-2=11+62=63-30+640+20=60+8=8 2-7-2-90-70+510+10=25-1=53 8 7=73-60+375-10=44-9=5 4+1-9=90-80-1650+20=44+9=1 3-4-6-86-30+1394-50 二33+2=53+

42、8 1 =63-60+1610+20=72+8=85+6-2 =90-50+1580-30=20-9=7 1-4-4 =66-50+1950+10=89+2=88+3 1 =90-70+550-10=47+1=4 2-5-1 =84-20+1680-50=84+2=2 9-7-6 =86-50+910+30=90+6=89 6-1 =9 0-7 0-580-70=29+4=48+8 3=70-10+893-50=75+5=5 3-2-3 =90-80+1330+30=70+4=9 0-2-6 -83-10+1580 30=484=6 9-4-5 =70-40+1640+20=50-2=72+5

43、-1 =50-40-198060=29+4=6 1-6-3 =90-40+1580-70=40+6=6 3-4-3 =82-10+1363-60=88+3=11+1-3 =70-10+688-50=99 3 二3 2+9-8=90-10-1190-60=71-7=2 4-5-1-80-60+1540+10=87-4=1 9-3-5 =90-20+588-10=3 2-4=70+5-8 =84-30+183-30=31+6=6 1-6-1-79-40+520+40=22+6=11+3 1 =80-70+1180-60=50+5=72+7-5 =62-10+480-20=42+6=2 5-9-9

44、=90-60+1330+40=65-8=45 54=65-10+1930+20=88+3=30+5-3 =73-20+1150+40=56+8=21+2-7 =50-30+1990-60=90+8=8 4+3-5-90-20+118720=85+4=69+92=80-40+1373-40=63+8=4 2-3-6 =90-80-1950-30=84-0=58+8-6-70-50+570-30=63+4=36+89=68-60+1040+20=32-1=4 6-3-9 =80-60+1230+20=29+3=6065=90-80+920+40=86+5=748 1 =80-10+1820+30=

45、79+1=9 0+2-9 =9 0-7 0-550+20=990 二6 8-4-6 =75-40+2050+40=25+9=62+9-9-70-10+1250+10=23+1=70+9 1 =9 0-7 0-460-30=77+6=7 9-4-2 =90-80+872-20=93-3=4 4-4-5-70-20+1250+40=37+3=7 0-4-2 =90-20-1610+10=60-6=55+4-3 =80-70+1566-40=67+7=66+8-7 =70-20+250+30=26 2=566 1 =77-20+967-10=45+8=2 0-9-5 =80-70+599-20=35

46、-7=5 8+9-3=85-10+740+20=25-2=1 5-6-7 -80-20+107720=79+2=64+13=7 0-6 0-884-30=19+5=37+1-8 =80-70+410+30=53+4=2 2-7-7 -80-30+570-30=50+6=14+6 7=70-40+1980-70=34-8=37+3-3 =66-60+220+10=78-2=5 1-9-4 =69-40+1410+30=16+4=1 7-9-7 =8 0-4 0-310+40=83-2=66+9-2 =80-70+720+10=92 8 二34+8-7 =60-30-1284-50=82+7=6

47、7-3-7 -70-50-1380 30=19-1=4 7-3-7 =90-40-1770-40=73-8=53+2-4 =76-50+1889-40=2 7-4=5 8-9-6-87-10+1290-30=84+3=7 3-1-6 =90-80+1150+20=45+2=79+9-6 =60-20+330-20=69-5=17+2-5 =65-60+173-40=60-3=45+28=90-60+378-20=84+9=49+6-4 =62-20+773-30=55-3=20+56=50-10-1687-50=31+2=374 2=90-60+690-80=65-0=69+8-4 =88-2

48、0+1570-60=68+1=25+5-9 =60-40+620+40=32-5=6 9-9-7 -7 0-6 0-150+40=72+2=24+3 3=73-50+290-40=17+2=55+4-9 =64-30+970-50=87+9=1 1-2-1 =64-60+1780-20=96-7=42 2 1 =87-30+1430-20=52-8=5 7-1-2 =67-20+340+40=18-9=64+6-4 =70-60+650+30=31+1=4 3-7-7 -66-20+380-60=36+3=6655=63-40+2030+10=62+6=8 0-1-1 =60-30-1890-

49、80=34+8=861-4 =66-30+89860=75-2=1 0-2-4 =61-10+290-80=78-6=6 7-8-5 =80-40+1830-10=76+8=45+96=50-10+126820=94-6=6 4+6-4=75-20+1994-20=53-7=78+4-3 =68-60+1280-60=66+5=1 0-8-3 =30-20-1710+40=66-0=85 5-4 =60-50+550+10=71+5=77+4-4 =75-40+180-70=61-0=3 4+4-6=77-40+840+20=71-9=12+9-5-90-30+1950+30=25-9=8 1

50、-2-9 =88-60+1230+30=84-5=31+3-4 =80-10+666-20=16-1=63+66=85-10+630+10=65 5=43+49=76-20+740-20=49-6=2 0-3-4 =61-60+990-70=11-9=6 0-2-4 =50-30+996-30=11+9=1 4+2-7-87-50+188930=42-8=8 8-2-6 =65-60+1850+30=5 1-4=3 4-5-2 =64-50+750+10=55 6=57+5-9-9 0-7 0-38520=65 4=7 5-3-5 =80-60+820+10=47-8=2 0-6-7 =90-