二年级口算基础篇1.docx

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1、9240=99-8 =7 + 23 =97 80=69-50=10+8 =83+10=5+94=8+90=73-3 =64+2 =62-20=61+7 =69+1 =47+20=78-6 =36 + 2 =93-2 =5 + 80=99-7 =29+1 =8 + 20=98-90=65 + 2 =1+7 =60+8 =70+18 =47-7 =87+10=28-10=53+6 =11+9 =1+80=5+40 =20+66 =60+23 =25 + 3 =70+14=29-10=9+71 =73-40=79-5 =34-1 =10+7 =22+60=65+5 =38-8 =164=30+30=

2、6+91 =38 + 30 =72+6 =3920=53-50=4+50=33+6 =11+20=53+40=4 + 21 =2+58 =98-5 =4+1 =54+1 =99-7 =30+69 =20+74=68-3 =2+51 =36-10=10+44=57-3 =24+20=78-6=4+70=40+24=82+1 =80+2 =11-1 =6+3 =50+40=7 + 61 =8960=28 + 60=60+12 =18-7 =8450=18-3 =5 + 24=10+54=0+60=50+4=2+45 =85-80=6+90=38-3 =89-10=4+35 =30+44=18-7

3、=30+61 =42-6 =74-5 =60-3 =68+4=91-6 =12-4=61-2 =57+7 =92-9 =55-7 =6 + 8 =628 =7 + 8 =38+5 =13 + 8 =449 =64-6 =45-6 =525 =73+9 =77+7 =42-8 =16+7 =16+9 =64+7 =8+9 =27+9 =38-9 =68-9 =11-8 =648 =12-9 =6+6 =91-5 =54+8 =225 =49+3 =77 + 8 =27+4=949 =6+6 =49+9 =8+6 =57+6 =7+9 =62-6 =95-6 =38 + 3 =27 + 8 =40

4、-2 =237 =256 =87 + 5 =86 + 6=40-4=77+5 =62-3 =58+9 =26 + 6 =14+9 =65 + 7 =49+7 =91-4=79 + 6=71-9 =46 + 8 =71-2 =34-7 =39+7 =69+8 =81-2 =38 + 8 =51-2 =646 =77+7 =47 + 8 =609 =47 + 7 =39 + 6=50-7 =24-6=63+9 =58+4=29 + 3 =85-7 =56+7 =24-8 =73-4=84+7 =28 + 8 =28+5 =88+7 =64+8 =11-8 =956 =62-9 =18+4=69+2

5、 =62+9 =28 + 6 =39-10=88 60=52+1 =51-1 =60+3 =78-70=0+2=69+1 =27+40=69-6=62-40=2+90=100-30=80-50=95-50=3+5 =30+11 =10+34=17-2=72-70=67-1 =37-4=20+33 =24+70=50+26=1+64=4+22 =83-10=89-40 =39-9 =40+37 =18-4 =25+10=37+40=90+3 =99-1 =75+2=65-3 =18+1 =54+4=41+4=84-2 =6940=16-10=55 + 10=23+40=54-50=76-30=9

6、5-4=21+2 =17+60=10+59 =44+40=56-10=2+14=30+4=75+10=244=85-2 =3 + 60=8860=47-20=2 + 73 =54-2 =30+6 =30+5 =91-30=46-3 =94+4=1 + 10=67-5 =56-10=92+2=35 + 10=58 8 =477 =63-2 =485 =561 =36-20=20+37 =24-3 =7 + 80=5620=1+75 =14+70=10+44=71-40=3+27 =68+10=8 + 71 =5+15 =85-1 =71-40=69-9 =57-40=14+50=65-5 =30

7、+15 =5720=69-37 =33+40 =81-20 =78-64=98-47 =37-16=17 + 72 =23+26 =14+70=23+24=31+61 =65 + 11 =30+27 =66-53 =35+43 =19-17 =35 + 12 =7664=45-12 =83-30=13+76=88-75 =4641 =28+30=33-31 =27-26=50+39 =62 + 36=7471 =15+70 =23 + 32=14+24=8956=30+29 =89-21 =89-11 =51+48 =36-30=2322 =4622 =6822 =27-12 =25-24=1

8、5-12 =42+47 =46+30=87-23 =9774=25-13 =16+82 =23 + 64=97-35 =68+21 =83-41 =9874=21+65 =31+53 =87 72 =24+14=48 + 50=23+15 =66-12 =35 + 62 =81-80=89 22 =99-24=24+31 =9635 =88-14 =35-23 =69-22 =86-33 =35-12=6362=7958 =48-25 =77-14 =79-70=21+77 =45+40=56-20=59-22 =53 + 32=49-26=98-81 =5942 =20+39 =97 81

9、=35+41 =92-41 =44-31 =25-14=8760=13+61 =44+15 =83-51 =7+70=84-80=53 + 5 =8 + 60=7 + 73 =27-1 =73-3 =21+70=52+40=4+82 =61-50=58-8 =74-20 =82+7 =9+71 =98-10 =32-2 =23+10=50+1 =57 + 30=87-7 =6+90=18-8 =10+8 =7560=57-20=88-2 =6+22 =8+20=20+28 =31-20 =24-3 =91+5 =2320=22 + 30=5 + 62 =2 + 25 =965 =999 =20

10、+0=25-2 =88-8 =60+4=82-2 =70+12 =82-60=9590=38+20=1+36 =13 + 6 =83-1 =70-40=67-60=30+3 =64+5 =38-5 =50+10 =70+10=55-1 =45-30 =75-5 =84-4=67 30=3+44=68+1 =98-7 =72-20=91+3 =93-1 =60-40 =30+49 =84-70 =22-10=86-4=67-20 =9970=29-2 =72+20=83-3 =63-3 =5 + 80=26-4=92+1 =20+63 =60+34=39-5 =20+28 =30+50=59-8

11、 =9040=41-10=95-2 =81-30=18-8 =70+7 =77-20=89 37 =99-42 =30+43 =22+60=27-12 =93-62 =94-61 =96-84 =34+24=5923 =20+65 =66-32 =42+52 =32 + 63 =84+15 =50+22 =41+51 =23+75 =79-58 =85+13 =50+39 =32 + 23 =88-41 =68-42 =53 + 35 =36 + 63 =7913 =40+12 =57-36 =78-75 =67-51 =6724=86-53 =12+74 =6644 =40+48 =30+48 =51+4