20以內(nèi)進(jìn)退位加減法練習(xí)

1、9 + 9 =8+ 9=11 - 2 =11-9=20- 2=11 - 3=12- 3 =13- 5=11-8=11- 7=7+ 9=9+ 6=14- 6 =15- 7=16- 8=17- 9=11 6=11- 5=9+ 5=9+ 4=12- 4 =13- 6=14 - 7=15- 8=7+ 8=8+ 6=11-4=11-3=19+ 1 =6+ 7=9+ 6=5+ 9=8+ 8=7+ 7=11-2=12- 9=15- 9=16- 9=17- 9=20- 3=12 - 8=12- 3 =9+ 3=6+ 6=20- 4=12- 5=13 - 7=14- 8=15 - 9=13- 5 =14- 7=

2、16- 8=14- 9=15- 9=20- 5=20+ 0=6+ 5=4+ 8=15- 8=13- 9=12- 6 =13- 8=18+2=13- 9=13 - 8=13- 7 =13- 6=14 - 5=16+ 4= 9+ 6= 5+ 6=20- 5=3+ 17=14- 9=20+ 0=14 + 6=7+ 7=12- 3= 8+ 8= 13- 4=16 + 4=20- 5=13- 5=13 - 4=6+ 8= 14- 5= 9+ 7=15- 6 =20- 7=16- 7 =18- 9=17- 8=16- 7 =3+ 17= 17- 8= 16+ 4=16 - 8=20- 8=16- 9=2+

3、 18=18- 9= 6+ 6= 9+ 9=20- 1 =15- 9=13- 9=14- 8=14- 9=6+ 9= 12- 4= 13- 5=14- 6=11- 2=13- 4=14- 5 =15- 6 =15- 7=16-8=17-9=12- 5 =16 - 7=17- 8=18- 9=20- 1 =12- 6= 15+ 5 = 20- 2=4+ 16=9+ 9=8+ 8=7+ 7=6+ 6=20+ 0= 12- 7= 13- 6=13- 7 =8+ 7=7+ 6=8+ 6=7+ 9=13- 8= 14- 7= 15- 8=16- 9=15 -9= 13 - 9 = 14- 8 =14-

4、9=191=18 2=173=16 4=12 -8= 12 - 9 = 20- 3 =20- 6=11- 2=12- 4=13-5=14- 6=20- 4=317=182=119=15- 7=16- 8=155=16 4=218=11-2=20- 9=12- 3=14 6=20- 1=17- 9=20- 2=20- 6=13-4=13- 8=14- 5=20- 3=13 7=20- 4=16- 9=15- 6=173=16- 7=16 4=11- 3=12- 5=13-6=12 8=17 - 8=18-9=515=20- 19=11 9=20- 8=11-4=11 - 5=6 14=12-4=

5、13- 5=14- 6=13- 7=11- 6=20- 9=20- 12=15- 7=16- 8=17- 9= 13 7=20- 15=12- 9=13-8=14- 7 =20- 18=12 8=020=191=14- 8=15- 8=119=15- 9=20- 7=11-3=11-4=20-17=11- 7=11-8=11- 9=13- 9=11- 5=20- 16=12- 5= 13- 6=11- 9=11 9=12-9=12 8=13- 7=12- 6=14- 7= 15- 8=13 7=13- 9=146=14- 9=20- 8=16- 9=20- 1 = 20- 12= 13- 91

6、5- 9=15 5=16- 9=16 4=12-7=12- 8= 20- 5=17- 9=17 3=18-9=182=11- 6=11- 7=11-8=11-9=200=11- 8=19 1 =12- 8=20- 1=18- 9=17- 8=16 - 7=12- 7=13- 8=14- 8=15- 8=15- 6=14- 5=13- 4=12-3=13- 6=20- 1=16- 8=11- 7=11-6=12- 6=13- 7 =20- 19=11-6=13- 5=13- 4 =14- 7=20 - 2=13- 5 =20- 13=13 - 4=11-2=12- 3=13- 4 =14- 5=

7、12- 4=11-5=11-4=11-3=15- 6=16- 7=18 - 9=20- 1 =11-2=12- 3=200=20- 3=20- 2=020=20- 3=11-3=20- 4=20- 5=20- 6=12- 5=1 19=12- 4=13 - 5=14- 6=14 - 7=14- 6=14- 5=15- 6=15- 7 =16- 8=17 - 8=218=20- 1 =11 9=20- 2=12 8=20- 4=20- 5=20- 6=20- 7=13 7=14 6=15 5=164=317=416=5 15=614=18- 9=17- 9 =17- 8=16- 9=16- 9=

8、15- 8=14 - 7=13- 6=16- 8=20- 3=20- 4=20- 5=13- 7 =13- 8=13 - 9=12- 5=20- 6=15- 9 =14- 9=13 - 9=12- 6=12- 7=12-8=12- 9=17 3=18 2=19 1 =200=11-4=11-5=11-6=11-7=13- 8=14- 8 =15- 8=16- 7=713=20- 8=20- 19=20- 18=20- 7=11-9=11-8=11-7=812=911=11-8=11- 9=11-6=15- 7=20- 8=20- 9=191=11-9=18 2=20- 19=15- 6=11-

9、5=12- 9=12-8=20- 18= 18 2=20- 17=11-8=12- 7=12- 6=12- 5=12-4=11-7=11-6=11-5=17 3=11-4=11-3=11-2=13- 7=16 4=20- 16=15 5=20- 15=11-4=11-3=11-2=12- 9=15- 7=16- 8= 17- 9=11- 7=12-8=12-7=12- 6=12- 5=11- 8= 11-9= 12-7=20- 16=20- 14=20- 13=20- 12= 20- 11=12- 8= 12- 9= 13- 7=13- 8=12- 4=12-3=13- 9=13- 8=13-

10、 9=14- 7=14- 8=14- 9 =14 6=13- 7 =13 7=12 8=11- 3=12-4= 13-5= 14- 6=13 - 6=11 9=20- 9=20- 8=16- 9=15-8=14-7= 14-8=20- 7=13- 5 =13- 4=14- 9=20- 16= 20- 18= 20- 19= 11 - 9=14- 8=14- 7=14- 6=14- 5=191=182=173= 164=15 - 9=15- 8=15- 7=15 - 6=20- 12= 20- 13= 20- 14= 20- 15=020=1 19=11- 2=12-3=11- 8=911= 2

11、0-1= 20- 2=13 - 4=14- 5=218=317=15- 7=16-8= 17-9=20-17=11- 3=12- 5=11-4=12-4=20- 3= 20- 4= 20- 5= 20- 6=14- 5=416=515=13 - 5=11- 2= 13- 4=15-6= 17- 8=11- 5=20- 1 =20- 19=20- 2=20- 7=20-8=20-9= 20-11=6 14=15- 6 =16- 7=17- 8=155=146= 137=128=18- 9=11-6=12- 6=13- 6 =20- 7=20-8= 20-9=20-11=14- 6=713=812

12、=911=12- 7=12-8= 12- 9= 11- 9=20- 18= 20- 3=20- 17=20- 4=12- 3= 14- 5= 16- 7= 18- 9=20-7=20-8 = 20-9=20- 11 = 12-7=12-8=12-9= 11-9 = 11-2= 13-4=15-6=17-8 = 20-3=20-4 = 20- 5=20-6 = 15+5= 14+ 6=13 +7= 12 + 8 = 11-4=11-5=11-6=11-7 = 20-7=20-8 = 20-9=20- 11 = 15-7=16-8=17-9= 20-17 = 11-8=9 +" = 20

13、1=20 2 = 19+ 1=18 + 2=17 +3= 16+4 = 16-9=15-8= 14-7 = 14-8=11- 3=12-4=13-5= 14-6 = 12-7=12-8=12-9= 11-9 =20-3=20-4=20-5 = 20-6=20-7=20-8 = 20-9=20- 11 =15+5=14+ 6=13 +7= 12 + 8 =12-3=14-5= 16-7 =18-9 =11-2=13-4=15-6 =11- 4= 11-5= 11-6= 11-7 =20-3 = 20-4 = 20-5= 20-6 =15-7=16-8= 17-9 =20-17 =12-7= 12

14、-8=12-9= 11-9 =11-2=13-4= 15-6 =20-7= 20-8= 20-9= 20- 11 =11-3=12-4=13-5= 14-6 = 11-8=9 +"= 20-1 = 20-2 = 16-9=15-8= 14-7= 14-8 = 19+1= 18+2=仃+ 3=16 +4 = 20- 16=20- 18= 20- 19=11-9= 11-3=12-4=13-5= 14-6 = 19+ 1 = 18 +2= 17 + 3= 16+4 =16-9= 15-8=14-7= 14-8 =20- 12=20- 13= 20- 14 =20-15=11-8= 9+

15、11=20-1 = 20-2 =15-7= 16-8= 17-9 =20-17 =15+ 5=14 +6=13 + 7= 12+8 =11- 4= 11-5= 11-6=12-3=14-5=16-7 =18-9 =15-7=16-8=17-9= 20-17=20-12 = 20-13= 20-14=20-15=20- 16=20-18=20- 19= 11-9 =20-3=20-4= 20-5= 20-6 =11- 4=11-5=11-6= 11-7 = 20-7=20-8= 20-9= 20-11 =11-2=13-4= 15-6=17-8 =20-7=20-8=20-9 = 20-11 =

16、12-7=12-8=12-9=11-9 =15+5=14+ 6=13 +7 = 12 + 8=11-3=12-4= 13-5= 14-6 =15-7=16-8=17-9=20-17 =16-9=15-8=14-7= 14-8 =11-8=9+h= 20-1= 20-2 =18+2= 17+3=16+4 =20-16=20- 18= 20-19= 11-9 =11-3=12-4=13-5= 14-6 = 16-9=15-8= 14-7= 14-8 = 19+ 1 = 18 +2 = 17 + 3= 16+4 = 11-8=9 +"= 20-1= 20-2 = 20-7 = 20-8 =

17、 20-9=20-11 = 11-2=13-4=15-6= 17-8 = 15+ 5=14 +6=13 + 7= 12+8 = 12-7=12-8=12-9= 11-9 = 11-4=11-5= 11-6= 11-7 =12-3=14-5= 16-7=18-9= 19+ 1 = 18 +2 = 17 + 3= 16+4 = 11-3=12-4=13-5= 14-6 = 20- 16=20- 18= 20- 19=11-9= 20- 12=20- 13= 20- 14= 20-15= 16-9=15-8=14-7= 14-8 = 15-7=16-8=17-9=20-17 = 20-7 = 20-

18、8 = 20-9= 20-11 =11-2=13-4= 15-6=17-8 = 15+ 5=14 + 6= 13+7= 12 + 8 =12- 3=14-5= 16-7= 18-9 =11-2=14-4=15-6=17-8 =12-7=12-8=12-9= 11-9 =12-3=14-5= 16-7 = 18-9=11-4=11-5= 11-6= 11-7 =20-3=20-4 =20-5= 20-6 =20-7=20-8=20-9 = 20-11 =11-3=12-4= 13-5= 14-6 =16-9=15-8= 14-7= 14-8 =19+ 1=18 + 2=17 +3= 16+4 =

19、11-8= 9+"= 20- 1= 20-2 =20-3=20-4 = 20- 5=20-6 =15+ 5=14 + 6=13 +7= 12+8 =11-4=11-5= 11-6= 11-7 =20- 16= 20- 18=20- 19= 11-9 =15-7= 16-8=17-9 = 20-17 =12- 7=12-8= 12-9= 11-9 = 20-7 = 20-8= 20-9 = 20-11 = 15+5= 14+6= 13+7= 12+8= 20-3= 20-4=20-5= 20-6 =11-2=13-4=15-6 =20-7 =20-8=20-9 =20-11 =11-3

20、=12-4= 13-5=14-6 =19+ 1 = 18 +2=17+3=16 + 4 = 20- 12=20- 13= 20- 14= 20-15 =16 9= 15 8=14 7 =14 8 = 11-8=9 +" = 201= 20-2 = 20- 16= 20-18=20-19=11-9 =15 7 = 16 8=17 9= 2017 = 19+ 1 = 18 +2 = 17 + 3= 16 + 4 = 20- 16=20- 18= 20- 19=11-9=11-8 = 9 +" = 201 = 20 2 = 2012 = 2013=20-14=20-15 =16-

21、9= 15-8=14-7=15-8 =11-3=12-4=13-5= 14-6 =20-3= 20-4=20-5 = 20-6=11-2=13-4=15-6= 17-8 =15+ 5=14 + 6=13 +7= 12 + 8 =20-7= 20-8=20-9 = 20-11 =12- 3=14-5=16-7= 18-9=11-4= 11-5= 11-6= 11-7 =12- 7=12-8=12-9= 11-9 =20-7=20-8 =20-9 =20-11 =20- 12=20-13=20- 14=20-15=12-3=14-5 =16-7 = 18-9=20-3=20-4 =20-5= 20

22、-6 =15+ 5=14 + 6 =13+7= 12 + 8 =20-7=20-8 =20-9= 20-11 =11-2=13-4= 16-6= 17-8 =20-7=20-8= 20-9= 20-11 =11-3=12-4= 13-5=14-6 =12-7=12-8=12-9= 11-9 =19+ 1 = 18 +2 = 17 + 3= 16 + 4 = 20- 16= 20-18=20-19=11-9 =16- 9=15-8= 14-7= 14-8 = 11-4=11-5= 11-6= 11-7 = 20-7 = 20-8 = 20-9= 20-11 = 15+ 5=14 +6=13 +

23、7= 12+8 = 11-2=13-4=15-6= 17-8 = 20-3 = 20-4 = 20-5= 20-6 = 12-7=12-8=12-9= 11-9 = 16-9=15-8=14-7= 14-8 = 20- 12= 20-13= 20-14=20-15 = 11-8=9 +" = 201=202 = 19+ 1 = 18 +2 = 17 + 3= 16+4 =11-3= 12-4=13-5=14-6 =15-7=17-8= 17-9= 20-17 =20-3 = 20-4 = 20-5=20-6 =20- 16=20- 18=20-19= 11-9 =16-9= 15-8

24、=14-7=14-8=11-2=13-4= 15-6=17-8 =11-8=9 +" = 201=20 2 =20- 12=20-13=20- 14= 20-15=19+ 1=18 + 2= 17+ 3=16 + 4=16-9=15-8= 14-7 = 14-8=17-9= 20-19=16-9=15-8 =14-7= 14-8=20-15=11-9 =15+ 5=14 + 6="8=9 + "=20- 16= 20-18=20-19=11-9 =11-3=12-4= 13-5=14-6 =15+ 5=14 + 6= 13+ 7 = 12 + 8=12-7=12-

25、8=12-9= 11-9 =20-7=20-8=20-9 = 20-11 =11-4=11-5=11-6= 11-7 =13- 4=15-6= 17-8=19 +1 =20-4=20-5 = 20-6= 20-16=12-4=11-5=11-6=11-7 =20- 19= 11-9=15-7=16-8 =20- 13=20- 14= 13+ 7=12 +8 =13- 5=14-6 = 20-12 = 20-7 =13+7= 12+ 8=17 + 3=16 +4 =20-3 =20- 18=20-1 = 20-2 =20- 13=20- 14=13+ 7=12 +8 =15+ 5=14 +6=1

26、4 7= 14-8 =11-8= 9+"=17-9= 20- 17=12-8=12-9=11-4= 11-3 =20-7 =11-2= 18 + 2= 20-8 =18-9 =11-2=18 + 2 =20-8 =20-7 =20-9 = 20-11 =12-3= 14-5 =12-8=12-9= 11-9 =11-4 =20-8= 20-9= 20- 11 =12-7 =20- 1=20-2 =11-3= 12-4 =17+3= 16+4=20-3 =20-18 =20-4= 20-5= 20-6 =20-16=13- 5= 14-6=20-12=20-7 =16-9= 15-8

27、=20- 19=11-9=20- 13=20-14=13+7= 12+8 =13-5=14-6 =20-12 = 20-7 =20-4= 20-5=20-6 = 20-16=14-7= 14-8 =11-8=9 +"=13- 4= 15-6=17-8=19 +1 =20- 15= 15+ 5=14 +6 = 20 4=20-5=20-6 =20- 16=17-9=16-9= 15-8= 14-7=14-8 =11-8= 9+h= 11-5=11-6 =11-7 =20-17 =20-7 = 12-8 =12-9= 11-9 =11-4=20-9 =20-11 =12-3 =14-5=

28、17 +3 =16+4=20-3 =20- 18=13-5=14 6=20-12 =16-7=20- 15=20-7=15-7 =16-8=18-9 =20-11 =12-3 =14-5= 20-7 =11-5= 11-6= 11-7=20-9 =20- 13=20- 14=13+ 7=12 +8=17- 9 = 20-17 =16-9= 15-8=12-8= 12-9=11-9=11-4 = 20-15=15 +5= 14+6= 18-9=11-2=18 +2 = 20 8= 16-7 =17+3= 16+4=20-3=20- 18=17+3 =16 + 4 = 203 = 2018=17-

29、9 =20-17=16-9= 15-8=20-4 =20-5 = 20-6= 20-16=20-8= 20-9=20-11=12-7 =20- 1= 20-2=11-3=12-4 =仃+ 3=16 + 4 =20-3=20- 18=20-15=15+5= 14+6= 18-9 =11-5 =11-6=11-7 = 20-9 =20-19=11-9=15-7 = 16-8 =20-2=11-3=12-4 =11-2 =18 + 2 = 20-8=16-7 =20-8 =20-9 = 20-11 = 12-7 =13-5 =14-6 = 20-12=20-7 =20-15=15+ 5= 14 +6

30、= 18-9=17-9=20-17 =16-9=15-8 =12-8 =12-9=11-9=11-4 =14-7 =14-8= 11-8=9 +"=17-9 =20-17=16-9=15-8 =14-8= 11-8=9 +"=20-11 =12-3= 14-5=20-7 =13-5=14-6=20- 12= 20-7 =17+3=16+4 =20-3=20- 18=12-8=12-9 =11-9=11-4=20-4=20-5=20-6 = 20-16=11-5=11-6= 11-7=20-9=20-13=20-14= 13+ 7=12 + 8 =17+3=16+4 =203

31、= 20- 18=11-2=18+ 2=20-8=16-7 =20-15=15+5= 14+ 6=18-9=20-2= 11-3=12-4=17+3 =16+4=20-3=20- 18=12-8 =12-9= 11-9= 1-4 =14-7 =14-8=11-8=9 +"=20-4 =20-5=20-6 = 20-16 =13-5 =14-6=20-12= 20-11-5 =11-6=11-7=20-9 =20-19=11-9=15-7=16-8 =20-1 =20-2=11-3= 12-4=11-2 =18+2=20-8= 16-7=17+3 =16+4=20-3 = 20-18

32、=20-8 =20-9=20-11= 12-7=20-19=11-9=15-7= 16-8=11-2 =18+2=20-8=16-7 =17+3 =16+4=203=2018 =20-8 =20-9=20-11 = 12-7 =20-1 =20-2= 11-3= 12-4 =11-5 =11-6= 11-7=20-9 =20-4 =20-5=20-6=20-16 =17+3=16+4 =203= 20- 18=11-2=18+ 2=20-8 =16-7=17+3=16+4 =203 =20-18=12-8=12-9 =11-9=11-4=20-15=15+5 =14+ 6=18-9=17-9=

33、20-17= 16-9=15-8 =14-8= 11-8=9 +"=13-5=14-6=20- 12=20-7=20-11 =12-3= 14-5=20-7 =17+3=16+4 =20-3=20- 18=11-5=11-6= 11-7=20-9=12-8=12-9= 11-9=11-4=20-2= 11-3=12-4=13-5=14-6=20- 12 =20-7 =20-8=17-9=20-15=14-8= 11-8 =20-9=20- 11 =20-17 =16-9 =15+5= 14+6 =9+h =12-7 =15-8 =18-9=20- 13=20- 14= 13+7 =1

34、2+8 =17-8 = 20-7 = 20-8=20-9 =速算天天練（33）14+ 6=20-9=11-7=20+0 =12-7=12-8=12-9= 15+5=15- 7= 20-4=15-6= 20-11 =13+7= 12+8= 20-7= 20-8=20-16=20-13= 14-7=16 + 4=20-11=11-4 = 11-5= 11-6 =12 3= 14 5= 16 7= 18 9=11-3= 12-4= 13-5=14-6 =20- 18= 20- 19=11-9=20- 12 =16- 8= 17-9=20-17 = 20-3 =11-8= 9+11=20-1= 20-

35、2 =14- 8=19 +1 = 18 +2= 17+3=速算天天練（34）11-3= 12-4= 13-5=14-6=11-8=9 +" = 201= 20-2 =20- 14= 20- 15=16-9 = 15-8=14- 8=19 + 1= 18 + 2= 17+3=20-18= 20-19= 11-9=20-12=12-3=14-5= 16-7= 18-9=16-8= 17-9= 20-17= 20-3 = 20-11=11-4=11-5=11-6=速算天天練（35）17-8 = 20-7= 20-8 = 20-9 =13+7=12+8= 20-7= 20-8 =12-7=1

36、2-8=12-9= 15 + 5 =17-8=20-7= 20-8= 20-9 =20-5=20-6= 11-2= 13-4 =20- 16 = 20-13= 14-7 =16+4=16-8=17-9 = 20- 17=20-3=14- 8=19 +1 = 18 +2= 17+3 = 20-18= 20-19=11-9 = 20-12 = 11-3=12-4= 13-5= 14-6 =20- 14=20- 15= 16-9=15-8 = 11-8=9 +"= 20-1= 20-2 = 14+6= 20-9=11-7=20+ 0= 12-7=12-8=12-9= 15+5=15- 7=

37、20-4=15-6=20-11 = 13+7= 12+ 8=20-7=20-8= 12-3=14-5=16-7=18-9 = 20-11=11-4 = 11-5= 11-6 =速算天天練（36）20-16 = 20-13=14-7=16 + 4=12-3=14-5=16-7=18-9 =17-8=20-7= 20-8=20-9=13+ 7= 12+ 8 = 20- 11= 11 4=15- 7=20 4= 15 6= 20 11 =11 3= 12 4= 13 5=14 6 =16 8=17 9 = 20 17 =20 3=12 3=14 5= 16 7= 18 9 =20 18 = 2019

38、 = 11 9= 20 12 =20 11= 11 4= 11 5= 11 6=11 5= 11-6 =14- 8= 19+ 1 =18 + 2= 17+ 3=12 7= 12 8=12 9= 15+ 5 =20 5 = 20 6=得分 標(biāo)準(zhǔn)1分30秒以內(nèi)1分30秒-2分30秒2分30秒以上14+ 6=20-9= 11 7= 20+ 0 =20 16= 20 13= 14 7=16 + 4 =11 8=9+ 11 =20 1= 20 2 =16 8= 17 9= 20 17= 20 3 =11 3=12 4= 13 5= 14 6=14 8= 19+ 1 = 18+ 2=17+ 3 =20 1

39、4 =20 15 = 16 9= 15 8 =20 5= 20 6= 11 2=13 4 =16 8 =17 9= 20 17=20 3=11 3=12 4=13 5= 14 6=20 18 = 20 19= 11 9= 20 12 =14+ 6= 20 9= 11 7= 20 + 0=速算天天練（38）20 5=20 6= 11 2 =13 4=20 18= 20 19= 11 9= 20 12=速算天天練（37）17 8=20 7= 20 8= 20 9=20 14 = 20 15= 16 9= 15 8 =13+ 7= 12+ 8 = 20 7= 20 8 =14- 8= 19+ 1=1

40、8+ 2= 17 + 3 =13+ 7= 12 + 8 = 20- 7= 20- 8=11-8= 9+ 11= 20- 1= 20-2 =得分 標(biāo)準(zhǔn)1分30秒以內(nèi)1分30秒-2分30秒2分30秒以上20- 14= 20- 15= 16- 9= 15-8 =17- 8= 20- 7= 20-8= 20-9=得分 標(biāo)準(zhǔn)1分30秒以內(nèi)1分30秒-2分30秒2分30秒以上20- 5=20- 6= 11-2= 13-4 =20- 14 = 20- 15= 16-9=15-8=16 8= 17 9 =20- 17= 20- 3=12 3= 14 5= 16 7 = 18 9=20- 18 = 20- 19

41、= 11-9= 20- 12=17-8= 20-7= 20- 8= 20- 9 =14+ 6 = 20-9= 11-7= 20+ 0=15- 7= 20-4= 15-6= 20- 11 =15- 7 = 20-4=15- 6= 20-11 =20- 11= 11-4= 11-5= 11-6=17- 8= 20- 7= 20- 8 = 20-9=20- 16= 20- 13= 14- 7= 16+ 4 =13+ 7= 12+ 8= 20- 7= 20-8 =12- 3= 14-5= 16- 7=18-9 =20- 16= 20- 13=14 - 7= 16+ 4 =12- 7=12- 8= 12

42、-9= 15+ 5 =速算天天練（39）速算天天練（40）12- 7= 12- 8= 12- 9= 15 + 5 =20- 14 = 20- 15= 16-9= 15- 8=14- 8= 19+ 1= 18 + 2= 17+ 3 =14- 8= 19+ 1= 18+ 2= 17+ 3 =11-8= 9+ 11 = 20- 1=20 - 2 =11-8= 9+ 11= 20- 1= 20- 2 =16- 8= 17-9= 20- 17=20-3 =20-5=20-6= 11-2= 13-4=13+7= 12 + 8= 20-7=20-8 =20-11= 11-4=11-5= 11-6=14 +

43、6= 20-9= 11-7= 20+0 =15- 7=20-4= 15-6= 20-11 =12 3= 14 5=16 7 = 18 9 =20-16 = 20-13= 14-7 =16 + 4 =速算天天練（41）12-7= 12-8=12-9= 15+5= 14 + 6= 20-9=11-7 = 20 +0=12 3= 14 5= 16 7 =189 = 20-16 = 20-13= 14-7= 16+4 = 13+7= 12 + 8= 20-7= 20-8 =15- 7 = 20-4= 15-6=20-11 =17- 8= 20-7 = 20-8= 20-9=20-14 = 20-15=

44、16-9=15-8=14-8=19 +1=18 + 2=17 +3=11-3=12-4= 13-5= 14-6 =16-8=17-9=20-17= 20-3 =12-7=12-8=12-9 = 20-5=20-6= 11-2= 13-4=15 +5=11-8= 9+"= 20-1 =20-2 =20-5=20-6=11-2=13-4 =11-8=9+h= 20-1=20-2 =速算天天練（42）20-14= 20-15= 16-9=15-8=16- 8= 17-9= 20-17=20-3=17- 8= 20-7 = 20-8= 20-9 = 20-18 = 20-19=11-9= 2

45、0-12= 14-8= 19+ 1 = 18 +2=17 +3 =15- 7= 20-4= 15-6=20-11 = 12-3=14-5=16-7=18-9= 13+ 7=12 +8= 20-7= 20-8= 14 + 6=20-9=11-7 = 20+0=14-8= 19+ 1=18+ 2= 17+ 3 =11 7= 11-2= 13-4= 15- 6=得分 標(biāo)準(zhǔn)1分30秒以內(nèi)1分30秒-2分30秒2分30秒以上12+ 8= 15- 7= 16-8= 17-9 =得分 標(biāo)準(zhǔn)1分30秒以內(nèi)1分30秒-2分30秒2分30秒以上速算天天練（44）9+ 11 =17 + 3=11-9= 19+ 1

46、=11-7= 11-2= 13-4= 15-6=14-5 =16-7= 18-9= 20- 3=12-8 =13 + 7=20- 17=20 - 12 =速算天天練（43）12-9= 11-9=15+ 5=14 + 6=20- 13 =20-14 = 20- 15= 11-8=12 + 8= 15-7= 16- 8= 17-9 =18 + 2= 17+ 3= 16+ 4 = 20-16 =18 + 2= 17+ 3= 16+ 4= 20 - 16 =20- 1= 20-2= 19+ 1 = 18+ 2 =16- 9= 15- 8= 14- 7= 14-8=16- 9= 15- 8= 14- 7

47、= 14- 8=20- 13= 20- 14= 20- 15= 11-8=20-5= 20-6= 11-4=11-5 =11-3= 12-4= 13- 5= 14- 6=16 + 4 = 20- 16= 20- 18= 20- 19 =16 + 4=20- 16= 20- 18= 20- 19 =12-3 = 20-4 =11-6= 20- 7=12-3= 20-4=11-6=20- 7=20-8 =20 -9 = 20- 11= 12- 7 =14-5= 16-7= 18- 9= 20 - 3=12-9 =11-9= 15+ 5= 14+ 6 =20-5= 20- 6= 11-4= 11-5

48、 =9+ 11 =17+ 3=11 9 =19+ 1 =速算天天練（46）速算天天練（45）得分 標(biāo)準(zhǔn)1分30秒以內(nèi)1分30秒-2分30秒2分30秒以上20 8= 20 9= 20 11=12 7 =18 + 2= 17+ 3=16 + 4=20 16 =得分 標(biāo)準(zhǔn)1分30秒以內(nèi)1分30秒-2分30秒2分30秒以上20 1= 20 2= 19+ 1= 18 + 2 =18 + 2=17+ 3= 16 + 4=20 16=12 3 =20 4=11 6 =20 7=12 + 8= 15 7= 16 8=17 9 =11 2= 13 4=15 6 =20 1= 20 2= 19+ 1 =18+ 2 =速算天天練（47）12 3 = 20 4= 11 6 =20 7=12 8= 13+ 7=20 17 =20 12=20 5 = 20 6 = 11 4= 11 5 =12 8= 13+ 7=20 17=20 12=11 3= 12 4= 13 5=14 6=20 8= 20 9= 20 11=12 7 =9+ 11= 17+ 3= 11 9= 19+ 1 =20 13 = 20 14= 20 15=