《連加連減30以內(nèi)加減法課件》由會(huì)員分享，可在線閱讀，更多相關(guān)《連加連減30以內(nèi)加減法課件（49頁(yè)珍藏版）》請(qǐng)?jiān)谘b配圖網(wǎng)上搜索。

1、7+6-4= 9+10-7 = 12+1+6= 19-9+5= 18-14+13= 16-9+12= 17-14+15= 8+10-8 = 2+9+5 = 18+1 + 1 = 6+12-9 = 16-11 +5 = 6-2+14 = 10+7-8 = 14-6-2 = 16-7+8= 11 + 2+5= 9-2 +7 = 5+10+4= 7-7+9= 15-3+8= 11-9+11 = 6+13-4 = 8+5+7= 3+17-2 = 12 + 7-9 = 5+14-5 = 5+14-5 = 4+16-4 = 13 13+15

2、 20- 1 - 5 = 18+1-9 = 9-5+15 = 10+3+7 = 4+16-8 = 9+ 6 +3 119-9 = 2+18-2 = 4+15-4 = 19-17+17= 14-7+8 = 6+ 8 +5 12+5-7 = 3+15-9 = 19-7+13= 15-3-9 = 15- 9 +5 = 13-10+9 = 20-19+8= 12+4-8 = 12-8+7= 11 + 4+3 = 1+12+6= 2+ 13-9 = 6413-9 10+2+5= 15+ 5+2= 10+7-17= 19- 4+5= 13-4

3、+8= 14+7+7= 7+6+8= 5-5+0= 6- 2+13= 15-6+9= 5+ 7 +4= 6-6+20= 9-3+7= 20-7+13= 7+12-8 = 15-14+13= 16-8+9 = 19+1 -6 = 17-4-6 = 14 + 4-4 = 20-1 -1 = 12 + 7-3 = 6-2+8 = 8+9+7= 17+5-20 = 10+8-15= 11 + 6-9= 11-8+2= 23-3-16= 16-0-13= 4-1+9 = 6+14-19= 7+13-6= 9+6+10= 8- 8+20=

4、 17-5-3= 10+10-17= 10-2-3= 15-6+4 2+ 11+8= 16-1-4 5+2+3= 11 — 4+4= I + 18-8 = 7+10-7 = 3+7+5 = 9+ 8-7 = 15-12+5= 8-1+9 = 5-3 + 8 = 6+11-8 = 12+2+3= 16-9-2 = 11-7+5= 15+1-6 = 12-10+2= 8+2+9= 12-1 -6 = 12+3-8 = 15-4-2 = 5+15-6 = 1+16+7= 13+7+0= 18-6-6 = 16-14+8= 3+ 7-

5、5 = 8- 3+4= 16+3+2= 11 + 8+4= 15+4-9 = 10-3+8= 17-4+2 = 20-11-8 = 14-3+5= 19-10+3= 11-4+9= 14-5-8 = 9-9+15= II + 7-7 = 7+4+5= 17-6+2 = 4+16-6 = 3-2+3= 20-8-6 = 20-16-2 = 15+2+6= 7+12+5= 2+10+4= 16-16+9= 2+13+4= 19-3-6 = 14-14+8= 18-3+5= 1+13-6 = 7+11+4= 11 + 3+6= 1

6、4+3-7 = 9+11+8= 5+15-6 = 12+7-12 = 15+4+6= 15+4-7 = 13-12+8= 14+6-11 = 7+9+2= 2+15+2= 10+7+7= 15+2-6 = 15+2+8= 12-3+9= 5+15-19 = 9-8+17= 2+ 13+7= 18-17+11 = 14+5+7= 10+7-6 = 3+8+10= 11-6-2 = 5-5+13= 17+2+7= 3+14+2= 1+15-8 = 12-12+14= 10-4-2 = 4—3+8= 9+ 9-6 = 8-1 + 1

7、0= 14 + 6-8 = 20-13+7= 4+14-8 = 18-10+14= 14+3-6 = 12 + 3+7= 10-9+4= 2+8-3 = 10+10+7= 8+ 4-6 = 3+15+4= 16+3-7 = 9+4+8= 5+12-5 = 12+6+4= 15+2-9 = 12-9+7= 8+2+4= 2+18-6 = 14-12-1 = 7+4+3= 4+13-6 = 10+1-8 = 4-3+7= 15-7+2= 18+1-14 = 18-1-7 = 13+7+8= 17-6+2= 6-1+7= 1+

8、19-15 = 8-2+7= 18-6-12 = 13-2-0 = 8+8+9= 17-15+1 = 18-18+7= 4+11-6 = 18-9+2= 8+8+1 = 17-8+2= 8+4-4 = 10+1+2 = 8+6+7= 20-12-6 = 3+9+2= 6+5+7= 6+14+1 = 8+ 3-2 = 7+ 7+4= 3+13+2= 8+11-4 = 9+3+2= 7+10-11 = 12-1 + 10= 5-2+7= 13-5+4= 18-17+8= 10+1-4 = 12-12+8= 4+12-6 = 10

9、+10-7 = 10 + 2-4 = 17-13+7= 11-8-1 = 5+11+3= 17-7-1 = 13-1+7= 9+1+4= 10+8-2 = 14-12+7= 2+8-7 = 12+5-6 = 14+6-7 = 4+11+2= 19-16-1 = 7-7+8= 9-7+9= 12-12+4= 7+10+7= 17-13+3= 19-9-1 = 16+1-7 = 16—6-4 = 7-7+8= 17+2-7 = 15+5+0= 19-10+2= 13+3+3= 15-10+2= 4+ 6-6 = 14-13+7=

10、 17-2-4 = 5+11+6= 5+10-8 = 17-6+7= 14-13+4= 5-5+9= 1+19-8 = 16-10-1 = 12 — 7+2 = 16 + 4-7 = 7—2+1 = 4+ 10-8 = 19-3+7= 12 + 7-5 = 2 + 8-4 = 20-3-5 = 11 + 1+6= 13 — 4-4 = 16+1+4= 9+5-3 = 2+13-7 = 11 — 4+2= 13+1-8 = 13—4+2= 15+3-10 = 8—2+7= 9+ 7-6 = 9-5+2= 17-14-2 = 10+

11、9-8 = 17-3+10= 8+10+1 = 4- 1 +6— 11 + 8-7 = 6-2+8= 17-12+2= 20-9+5= 4+11-4 = 20-9+1 = 11 + 3-4 = 14-7-2 = 12+2-6 = 13-8+2= 17-7-4 = 11+1-4 = 14-6-6 = 7+ 5+4= 7+3+2= 8+6+1 = 5+9+7= 3+16-12 = 17-15+8= 10+4-6 = 16-4+7= 13+6+4= 2+11-8 = 15-1-11 = 9+6+3= 8+6-4 = 18-11+4=

12、10-3-4 = 6+8-5 = 6-2+4= 10+1-4 = 15+3+2= 8+10-7 = 10+2+1 = 6-2+9= 14-1-4 = 5+13-5 = 15-14+7= 8-4-2 = 4+10+1 = 11 + 7-6 = 10-5-4 = 16-7-1 = 17-17+9= 11 + 3+4= 4+14-12 = 14-3-4 = 4+13+6= 14-8-3 = 8+10-7 = 4— 2+6= 15 + 2-9 = 19-2+8= 15-10-4 = 3-3+12= 17 + 2+1 = 7+4+2=

13、 6+11-5 = 5+13-5 = 8+9+4= 14-5-6 = 17-9+8= 14-11-3 = 6-1+2= 13-11+3= 9+1+2= 14+6-3 = 19-12+4= 8— 4+6= 6-4+7= 12-12+8= 8-2+2= 8+ 7-8 = 19-12-1 = 11 + 3+2= 13+4-6 = 19-12+2= 10-6-0 = 4+ 11 + 1 = 4+ 9-3 = 7-5+2= 20-19+7= 4+ 10+5= 2+12-2 = 7+13-6 = 17-5+2 = 7-7+7= 14-2

14、-8 = 14+2+2= 19-13-1 = 5+13-6 = 15-1+9= 13-2+8= 14-2+2= 12-3+7= 4-2+2= 20-14-2 = 17-7+2= 15-4-7 = 6-2+7= 16-3+2 = 10 + 4-3 = 20-2-10 = 6+12-5 = 10-6-3 = 14 + 4-7 = 19-15-4 = 18-10-2 = 7+8+2= 5-1+4= 14+1-6 = 9+8+5= 11 + 6-3 = 3+14-4 = 20-15-1 = 11-2+2= 19-14-1 = 15+1

15、-5 = 16-15+7= 7+4+6= 8+8+3= 8+ 8-2 = 11 + 4-5 = 8+7+2= 10-6-4 = 13-6+7= 11 + 2-4 = 6—5+8= 8—8+5= 5+5+7= 9—4-2 = 3-1 + 11 = 16-14-0 = 20- 7-4 = 12-3+8= 8+3-4 = 14+6-9 = 6+8+2= 2—2+7= 3-3+9= 13+5-3 = 12+1+2 = 5+8+7= 7+3+2= 4+16-8 = 9+4+1 = 14-7-2 = 4—2+6= 6—3+7= 20-

16、14-2 = 10-9+7= 16-7+2= 9+ 2-4 = 4+12-8 = 14- 14+2= 16+1-4 = 1 + 12+5= 9+10+0= 12-10+9= 18-18+7= 19-5-4 = 18-6-2 = 8-7+8= 4+12-5 = 9+9+1 = 4+13-7 = 17-14+2= 12-8-0 = 8+ 7-5 = 4+11-6 = 8-2-3 = 11-2+8= 9—4+3= 13-10+7= 18—18+4= 19—14+8= 5- 3+6= 20- 5-4 = 8+3+2= 11 + 4+7

17、= 4+ 8-5 = 1+13+1 = 3+ 12-4 = 5+13+1 = 16-5-6 = 18—12+7= 3+10-4 = 9+1+4= 12-5+3= 19—2-12 = 2+11-8 = 11 + 2+1 = 4+ 9-6 = 15-10+2= 1+ 17-11 = 15-11+2= 6—5+2= 5+ 9+4= 5— 5+4= 12—9-8 = 18+1-6 = 8+12-6 = 17—16+7= 1+19-5 = 1+19-7 = 7+ 7+3= 2+ 8-7 = 12+6+7= 8+ 7-4 = 8—2+3=

18、 9+8-1 = 19-18+5= 7— 6+5= 14-3-1 = 11 + 5-4 = 19-1-3 = 8一 8+8= 11-8-1 = 20-8-6 = 2+8+2= 17 + 2-4 = 17-7-6 = 18-3-5 = 10+7-3 = 13—3+2= 15+2-3 = 14-9-2 = 5+ 7-4 = 7+ 5-2 = 6+ 9-5 = 18-4+6= 15+1-5 = 5+5+2= 7+13-3 = 12+1-8 = 15-6+6= 17-6+7= 11-6-3 = 18-9-1 = 13-1+9=

19、9+7-8 = 17-9+2= 4+16-10 = 15+1 + 1 = 7-4-2 = 15-2+2= 19-19+7= 5+8+8= 16-11-2 = 7-6+7= 13-9-6 = 19-4-5 = 5+15-8 = 18-3+5= 9+ 6-5 = 18-8+2= 3+11-4 = 11 + 3+3= 17-4-6 = 16-7-2 = 10+4+2= 12+8+3= 18-1-10 = 17+2-8 = 19-8-7 = 20-11-4 = 13-9+2= 20-8-10 = 11-9+2 = 18-16+8= 9

20、-7+7= 19-8+0= 7-3+5= 10+5-2 = 2+17-8 = 10-7+6= 15-12+2= 5+6-6 = 12-5-5 = 7+11-4 = 19-5-8 = 19-19+4= 8+ 6-6 = 20-18-1 = 1 + 16-9 = 17+3-8 = 19-3+6= 1 + 17-6 = 7+6-11 = 4-4+8= 13-6-2 = 6+14-11 = 3+15-5 = 19-15+3= 4+13-11 = 20-10+2= 7-2+4= 6- 3-2 = 12+6+2= 20-14-2 = 14-1

21、4+6= 10-3-4 = 12-5+3= 15+2-8 = 17-10+2= 7+10-5 = 10+4-5 = 7-7+6= 12+3-8 = 8+9+3= 4+12-8 = 10-6+3= 17+2-8 = 8+9+7= 9-2+3= 5+11-6 = 15-10+2= 14-2+3= 13-6-4 = 15-1-5 = 4+12-7 = 20- 9-7 = 3-2+6= 15-2-11 = 9-5+6= 12 + 2-5 = 16-6+1 = 9+5-4 = 11 + 8-3 = 11-9+2 = 9+11-2 = 14

22、-1-6 = 15-2+5= 1 + 19-20 = 5+9-6 = 15-3-4 = 9+ 3-2 = 14-6+8= 7—2-4 = 20-12+2= 11 + 8-3 = 19-8+1 = 17-2-2 = 13+1-8 = 3+13-6 = 6+8-7 = 10-8-1 = 9+10-6 = 10+3+9= 6+ 4-5 = 13+7-5 = 2+16-11 = 11-3+3= 16-11-1 = 18-1-6 = 19-6-9 = 20-15+6= 11-1+4= 14+2+2= 7-1-0 = 17-9+7= 19

23、-1-9 = 17+2-5 = 9+ 3-6 = 8+6-5 = 18-5-4 = 8—7+9= 2+17-5 = 16-6-7 = 7- 4+6= 3+15-5 = 8- 8+0= 13+1-8 = 2+8-4 = 3+ 10-5 = 14-3-6 = 13-13+8= 11-3-5 = 12+2-7 = 13+7-6 = 8+ 10-4 = 16+3-7 = 5+12+2= 16-14-2 = 17-6-10 = 1—1+8= 1418-16 = 19-18+5= 11 + 9-12 = 17—3-4 = 8+9+3= 17-10

24、+5= 11-9-0 = 11-2+2= 11 + 6-7 = 11 + 8-4 = 17-14-1 = 14-1+5= 7+12-6 = 3+7+2= 8+ 4-5 = 9+ 7-7 = 15-7+3= 1+16-5 = 10+9-7 = 19-5-12 = 19-17+3= 16-8-4 = 20-19+5= 16+4-8 = 11 + 4-3 = 4+9-4 = 14-12+6= 5+7-4 = 14-10-2 = 10-9+7= 10+6-4 = 11 + 6-5 = 7+5+2= 9-1+5= 1 + 18-8 =

25、 13-10+7= 20-1-13 = 3+10-12 = 18-10+7= 8- 2-2 = 13-12+8= 16-13+7= 11 + 7-1 = 6+ 5+2= 7- 5-0 = 14+4+1 = 19—5-4 = 12—9+5= 15—4-6 = 9+7-6 = 19-18+0= 20-13-5 = 7+4+1 = 12-12+3= 10-2-8 = 13+7-4 = 20-1-11 = 19-1-10 = 12 + 6+2 = 18-15+7= 13-4-5 = 5+15-7 = 19-8-7 = 15-10-1 = 1

26、5-7-1 = 15-12+3= 12+8-6 = 2+9+2= 1+10-6 = 8+ 8+4= 1+19-16 = 5+10-14 = 14+6-18 = 9+ 6-2 = 15-5-4 = 19-11-2 = 1+17-6 = 14+4+2= 3+14-13 = 6-3+3= 19-16+4= 19-17-1 = 15-15+16= 3+11+2= 4+11-6 = 6+13-7 = 2+15-8 = 4+10-4 = 12+7-8 = 6+8+2= 5-4+2= 10+ 8-7 — 5+ 7+2= 6+ 14-5 =

27、 3+11-4 = 12+1-5 = 11 + 6-7 = 8+2+2= 19 - 16-1 — 12-2-7 = 12+5-7 = 1+14-9 = 13-2-4 = 5— 4+8= 14-7-6 = 12—2+4= 11-7+10= 13-7+9= 7—4+8= 10—5-5 = 17—7-4 = 15+2-3 = 18-7-10 = 10+7-4 = 17-14+2= 18- 1 + 14= 3+17-5 = 3+ 14-8 = 14-3-8 = 15+3-6 = 18-1-14 = 19-9+8 = 18-12-2 =

28、 16-15+5 = 11 + 8-4 = 17-16+6= 16-12-2 = 11-11+7= 9-9+8= 6-3+7= 17-9-2 = 15-1-10 = 8+11-3 = 16+1-10 = 18-12-2 = 5-4+2= 10-1+7= 1 + 11-2 = 7-2+8= 6+12-5 = 20-10-4 = 20-20+9= 3-1+8= 8+6-4 = 11-11+4= 13-5-2 = 6+7-2 = 15-13+8= 6—2+7= 15-7+2= 4+15-11 = 3+7+8= 20-16-2 = 12-

29、4-3 = 13-1-7 = 6-5+18= 10+1+3= 11-9+8= 3—2+9= 3+14-10 = 13-9+3= 8+2+2= 20-8-10 = 7-1+3= 7-4-2 = 20-12-4 = 17-8+5= 16-1-10 = 3+9-8 = 12+1-6 = 5-4+11 = 3-2+8= 3+12+5= 9+1-8 = 10-4-2 = 14-7-6 = 20-13-4 = 5-4+9= 1+14-8 = 3+13-4 = 16-5-5 = 18-2-11 = 4+12+2= 6— 3+9= 20-9

30、-10 = 18-3+3= 3+14-6 = 20-8-11 = 14-3+7= 15+4-8 = 9+2+6= 10+1-8 = 16-3-5 = 7+13-4 = 19-8-6 = 13+5-2 = 6+8-7 = 14-9+8= 9+10-7 = 11-5-2 = 4+7+4= 7+12-4 = 9+9-8 = 12-4+2 = 9+ 8-5 = 6+8-8 = 20-1-12 = 15-1-10 = 11 + 7-2 = 11-10+7= 20-15-2 = 19-16-1 = 9+5-4 = 1 + 9+3= 16-

31、5-10 = 20-3-7 = 16+1-2 = 16—3-4 = 1+11-5 = 2+11-4 = 15-10-1 = 14—4-2 = 18-14-5 = 5-5+10= 8+ 8-2 = 17-5-10 = 19—7-6 = 3-3+9= 6— 6+8= 20-16-2 = 16-8-6 = 4+7+2= 8-2+8= 3-2+2= 11 — 2+5= 1+17-7 = 15-1-8 = 3+10-6 = 14+3-10 = 15-14+6= 13+6-7 = 18—7-4 = 18-14-2 = 10+7-4 = 4-4+10

32、= 8+5+2= 12-8+5= 3+10-2 = 4+15-11 = 16+4-2 = 13+3-10 = 6+ 4+2= 10+7-4 = 15+3+0= 4+15-6 = 18-2-11 = 9-6+8= 4+15-6 = 19-11-2 = 1 + 13-10 = 13+4+2= 20-12-6 = 7+13-2 = 9-5+8= 15-13+2= 20-7-10 = 15-1-12 = 5+13-4 = 3+13-9 = 17-16+8= 8+ 9-5 = 14-1-10 = 16-8-7 = 9+9-11 =

33、17-8-6 = 5+8-5 = 4+10-2 = 8-3+5= 6+8-4 = 18-1-14 = 12+1-6 = 19-5-10 = 8-6+7= 9+2+2= 16-5-5 = 6+12-4 = 3+10+2= 2+17-5 = 3+16-5 = 2+17-14 = 20-13-1 = 18-6-5 = 12+5+1 = 16-14+2= 4+15-11 = 16-9-3 = 15-10+2= 4+14-10 = 4+12-8 = 2+14-10 = 19-11-6 = 9+10-8 = 7+ 5-2 = 12+3-3

34、= 9+ 8-5 = 4+ 6-7 = 9+1-5 = 2+11+2= 18-2-8 = 15-7-4 = 20-13-4 = 9-8+2= 18-3-10 = 6+10-5 = 16+1-5 = 19-3-6 = 10+1-8 = 17-2-6 = 18-1-10 = 14+1-8 = 8+7+3= 9—2+4= 8+ 8-7 = 5+ 9-2 = 11 — 3+2= 10—9+8= 8+3+2= 12+2-8 = 17-11-3 = 9+1+2= 13-11+3= 14—14+7= 15 + 2-12 = 10-1-7 =

35、 12+7-8 = 20-5-14 = 16-2-7 = 19-10-2 = 8-1+9= 10 + 2-1 = 7—2+3= 15-14+7= 7+ 7-4 = 2+15-6 = 1 + 14-8 = 7+9+1 = 13-7+2= 6+12-7 = 8+8-4 = 2+15-8 = 3-2+8= 9+10-7 = 17-13-4 = 2+16-8 = 18-5-5 = 5+8+2= 8-3+9= 14-14+9= 20-6-10 = 4+12-8 = 8+12-4 = 5+11-6 = 9-8+3= 18-14-2 =

36、18-6-4 = 4+11-6 = 2+12-2 = 9-7+8= 5-1+7= 19+1-10 = 17+3-20 = 11-7+2 = 18+2-8 = 12-9+2= 17-14-3 = 9-4+2= 17-1-8 = 15-5-6 = 8-7+2= 8+ 7-8 = 14-4-1 = 2-2+9= 9- 3-2 = 17-15+8= 9-3+2= 18-7+3= 19-10-2 = 10-2+8= 19-7+1 = 3+15-11 = I + 16-13 = 14-12+2= II + 7-4 = 8+5+2= 10+8-

37、7 = 19-2-14 = 14-6+2 = 4+11-7 = 8+3-1 = 4+ 16-10 = 20- 19+8= 4+ 7-2 = 20-7-10 = 10+ 2-8 = 7 + 6+2= 9+8-1 = 4+10-7 — 6+ 9-2 — 13—1-7 = 10— 4-2 — 16—5+2= 5+10-5 = 12—1+2= 16+4-2 = 13+5-3 = 13+5-4 = 16— 815 — 3+ 10-5 = 4— 1 _3 — 5+7-1 = 10— 1 -8 = 1419-12 = 9— 5+8= 6+ 1

38、3-2 = 7-3+2= 6+ 11-5 = 11 — 7-4 = 18-11-2 = 19—7-2 = 11 + 4-8 = 4+ 9-2 = 20—14-3 = 14-11-0 = 16—5-4 = 15—8-5 = 2+18-14 = 9+10-4 = 4+7+2= 10+2-8 = 20-11-2 = 18-5-5 = 17-6-2 = 17-7-8 = 15+1+2 = 17-1-4 = 7+7-4 = 10+3-8 = 18-1-14 = 19+1-11 = 6 — 6+5= 6+ 6-8 = 17-16-1 = 1

39、5-11-2 = 7+3+7= 13+2-4 = 6+ 8-5 = 18-5-10 = 14-13-0 = 13-12+5= 5+12-8 = 20-16-2 = 19-19+2= 3+15-11 = 16-12-2 = 6+13-5 = 13+3-8 = 19-7-3 = 10-3-4 = 13+1-2 = 11 + 7+2= 3+17-5 = 17-13-2 = 3+9+2= 11-10+5= 17-6-8 = 13-2-10 = 10+5-2 = 13+5-8 = 15-7-2 = 1+11-7 = 4+13-14 = 2

40、0-11+2= 4+12-8 = 17-2-11 = 9+ 5-6 = 3+ 9-5 = 5+10-2 = 6+14-10 = 18-1+8= 20-19+2= 9- 6-2 = 4—4+9= 5+ 6-2 = 8—5+8= 10-9+3= 4+11-8 = 17-2-4 = 8+7-8 = 13-6-2 = 11—2+3= 11 + 5-4 = 12+2-9 = 8+ 9-2 = 12+1-4 = 19-7-10 = 4+ 10-6 = 19-18+3= 14-5-4 = 17-10-4 = 18—12+2= 15-11-2 =

41、 15+5-11 = 10+2-8 = 18-11-6 = 18-15-2 = 16+1-1 = 10-4-5 = 14+3-10 = 20-11-8 = 19-18+8= 1+19-11 = 8+8-5 = 8-4+8= 11 + 7-4 = 7+13-2 = 17+2-8 = 17-7-6 = 4-4+5= 14-5-2 = 15-8-7 = 2+15-12 = 3+10-3 = 8+7+2= 10-5-5 = 1+17-11 = 13-10-1 = 11-6+2= 18-8-8 = 13+1-8 = 8+9-4 = 9+1

42、2-3 = 12+7-13 = 7+5-2 = 8+9-4 = 18-11-2 = 9 - 1 -7 = 5+ 13-2 = 15-7-7 = 9+7+2= 1+14+1 = 17-8-8 = 4— 4+9= 12+1-8 = 13+ 6-5 = 18-6+2= 20—8-12 = 16+1-5 = 16—12-2 = 13-4-5 = 19—12-2 = 17+2-5 = 10+ 1 + 1 = 18—9+8= 11-3+2= 15— 3+4= 11 —1-4 = 4+11-8 = 15-4+7= 11 + 9+2= 2+

43、14-4 = 4+13-5 = 1 + 13-8 = 16-8-2 = 3+7-2 = 3+14-11 = 8+3-7= 6-6+7= 5-3+8= 16-8+2= 17+4-8= 6+7-2= 6-5+12= 15-1-10 = 11-4+5= 6+ 9-4 = 6—5+2= 6+7+2= 8+2+2= 12-8-0 = 13+4-4 = 18-6-8 = 7+13-2 = 7+12-8 = 15-14+2= 13-11+2= 16-2+8= 17-9+7= 18-8+2= 16+2-10= 20-6-7= 21+2-4= 5+7+3= 6+8+4=