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珠心算教程:20以内基本加减算(2)

2012-12-10 15:37:52
|李婷

  直减、破五减基本练习

  9-9

  9-8 8-8

  9-7 8-7 7-7

  9-6 8-6 7-6 6-6

  9-5 8-5 7-5 6-5 5-5

  9-4 8-4 7-4 6-4 5-4 4-4

  9-3 8-3 7-3 6-3 5-3 4-3 3-3

  9-2 8-2 7-2 6-2 5-2 4-2 3-2 2-2

  9-1 8-1 7-1 6-1 5-1 4-1 3-1 2-1 1-1

  进位加、破五进位加基本练习:

  9+1

  9+2 8+2

  9+3 8+3 7+3

  9+4 8+4 7+4 6+4

  9+5 8+5 7+5 6+5 5+5

  9+6 8+6 7+6 6+6 5+6 4+6

  9+7 8+7 7+7 6+7 5+7 4+7 3+7

  9+8 8+8 7+8 6+8 5+8 4+8 3+8 2+8

  9+9 8+9 7+9 6+9 5+9 4+9 3+9 2+9 1+9

  退位减、退位满五减基本练习:

  18-9 17-9 16-9 15-9 14-9 13-9 12-9 11-9 10-9

  17-8 16-8 15-8 14-8 13-8 12-8 11-8 10-8

  16-7 15-7 14-7 13-7 12-7 11-7 10-7

  15-6 14-6 13-6 12-6 11-6 10-6

  14-5 13-5 12-5 11-5 10-5

  13-4 12-4 11-4 10-4

  12-3 11-3 10-3

  11-2 10-2

  10-1

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