20以内连减口算 | ||||||||||
| 1. | 17-8-7= | 21. | 15-5-2= | 41. | 15-10-2= | 61. | 18-17-1= | |||
| 2. | 20-9-11= | 22. | 18-6-9= | 42. | 20-6-3= | 62. | 18-17-1= | |||
| 3. | 18-0-8= | 23. | 11-1-2= | 43. | 14-12-2= | 63. | 15-7-5= | |||
| 4. | 13-2-1= | 24. | 18-17-1= | 44. | 18-3-7= | 64. | 14-4-7= | |||
| 5. | 13-2-7= | 25. | 14-12-1= | 45. | 18-7-8= | 65. | 18-2-13= | |||
| 6. | 19-9-7= | 26. | 14-12-1= | 46. | 15-3-1= | 66. | 17-15-1= | |||
| 7. | 13-5-6= | 27. | 16-12-4= | 47. | 12-4-2= | 67. | 16-8-8= | |||
| 8. | 15-5-9= | 28. | 19-3-11= | 48. | 12-3-6= | 68. | 17-3-8= | |||
| 9. | 17-12-4= | 29. | 19-0-5= | 49. | 14-5-9= | 69. | 19-3-10= | |||
| 10. | 11-0-7= | 30. | 16-2-3= | 50. | 16-6-10= | 70. | 14-5-7= | |||
| 11. | 20-6-12= | 31. | 19-8-4= | 51. | 19-8-9= | 71. | 18-12-3= | |||
| 12. | 11-3-1= | 32. | 11-0-11= | 52. | 18-14-3= | 72. | 18-13-1= | |||
| 13. | 17-3-9= | 33. | 20-2-7= | 53. | 11-7-4= | 73. | 18-16-1= | |||
| 14. | 16-2-8= | 34. | 20-6-12= | 54. | 13-8-3= | 74. | 12-7-4= | |||
| 15. | 13-6-5= | 35. | 16-5-11= | 55. | 19-12-7= | 75. | 20-15-4= | |||
| 16. | 20-10-2= | 36. | 15-5-7= | 56. | 19-3-7= | 76. | 15-14-1= | |||
| 17. | 20-3-17= | 37. | 17-14-3= | 57. | 12-2-8= | 77. | 13-8-3= | |||
| 18. | 18-5-9= | 38. | 18-7-8= | 58. | 20-12-1= | 78. | 20-17-1= | |||
| 19. | 12-0-11= | 39. | 19-14-2= | 59. | 12-8-3= | 79. | 11-7-3= | |||
| 20. | 18-5-7= | 40. | 11-10-1= | 60. | 12-10-2= | 80. | 15-6-1= | |||
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