20以内减法借十法破十法强化训练.doc

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20以内减法借十法练习题口诀：进位加法（凑十法口诀：看大数，分小数，凑成十，算得数）退位减法（破十法口诀：看大数，分出10，减小数，加剩数）如嫌题目太少可更改数字 7 例：15 — 8 = 5 10 2 （一） 18 — 9 = 17 — 9 = 16 — 9 = 15 — 9 = 14 — 9 = 13 — 9 = 12 — 9 = 11 — 9 = 17 — 8 = （二） 16 — 8 = 15 — 8 = 14 — 8 = 13 — 8 = 12 — 8 = 11 — 8 = 16 — 7 = 15 — 7 = 14 — 7 = 13 — 7 = 12 — 7 = 11 — 7 = 15 — 6 = 14 — 6 = 13 — 6 = 12 — 6 = 11 — 6 = 14 — 5 = （三） 13 — 5 = 12 — 5 = 11 — 5 = 13 — 4 = 12 — 4 = 11 — 4 = 12 — 3 = 11 — 3 = 11 — 2 = 13 — 5 = 12 — 5 = 11 — 5 = 13 — 4 = 12 — 4 = 11 — 4 = 16 — 7 = 15 — 7 = 14 — 7 = （四） 18 — 9 = 17 — 9 = 16 — 9 = 15 — 9 = 14 — 9 = 13 — 9 = 13 — 7 = 12 — 7 = 11 — 7 = 12 — 9 = 11 — 9 = 17 — 8 = 16 — 8 = 15 — 8 = 14 — 8 = 13 — 4 = 12 — 4 = 11 — 4 = （五） 12 — 3 = 11 — 3 = 11 — 2 = 13 — 5 = 12 — 5 = 11 — 5 = 13 — 8 = 12 — 8 = 11 — 8 = 16 — 7 = 15 — 7 = 14 — 7 = 12 — 6 = 11 — 6 = 14 — 5 = 15 — 9 = 14 — 9 = 13 — 9 = （六） 13 — 4 = 12 — 4 = 11 — 4 = 12 — 3 = 11 — 3 = 11 — 2 = 13 — 5 = 12 — 5 = 11 — 5 = 13 — 8 = 12 — 8 = 11 — 8 = 16 — 7 = 15 — 7 = 14 — 7 = 12 — 6 = 11 — 6 = 14 — 5 = （七） 15 — 9 = 14 — 9 = 13 — 9 = 13 — 4 = 12 — 4 = 11 — 4 = 16 — 7 = 15 — 7 = 14 — 7 = 18 — 9 = 17 — 9 = 16 — 9 = 15 — 9 = 14 — 9 = 13 — 9 = 13 — 7 = 12 — 7 = 11 — 7 = （八） 12 — 9 = 11 — 9 = 17 — 8 = 16 — 8 = 15 — 8 = 14 — 8 = 13 — 4 = 12 — 4 = 11 — 4 = 16 — 7 = 15 — 7 = 14 — 7 = 18 — 9 = 17 — 9 = 16 — 9 = 15 — 9 = 14 — 9 = 13 — 9 = （九） 13 — 7 = 12 — 7 = 11 — 7 = 12 — 9 = 11 — 9 = 17 — 8 = 16 — 8 = 15 — 8 = 14 — 8 = 13 — 4 = 12 — 4 = 11 — 4 = 12 — 3 = 11 — 3 = 11 — 2 = 13 — 5 = 12 — 5 = 11 — 5 = （十） 13 — 8 = 12 — 8 = 11 — 8 = 16 — 7 = 15 — 7 = 14 — 7 = 12 — 6 = 11 — 6 = 14 — 5 = 15 — 9 = 14 — 9 = 13 — 9 = 13 — 4 = 12 — 4 = 11 — 4 = 12 — 3 = 11 — 3 = 11 — 2 = （十一） 13 — 5 = 12 — 5 = 11 — 5 = 13 — 8 = 12 — 8 = 11 — 8 = 16 — 7 = 15 — 7 = 14 — 7 = 12 — 6 = 11 — 6 = 14 — 5 = 15 — 9 = 14 — 9 = 13 — 9 = 13 — 4 = 12 — 4 = 11 — 4 = （十二） 16 — 7 = 15 — 7 = 14 — 7 = 18 — 9 = 17 — 9 = 16 — 9 = 15 — 9 = 14 — 9 = 13 — 9 = 13 — 7 = 12 — 7 = 11 — 7 = 12 — 9 = 11 — 9 = 17 — 8 = 16 — 8 = 15 — 8 = 14 — 8 = （十三） 13 — 4 = 12 — 4 = 11 — 4 = 16 — 7 = 15 — 7 = 14 — 7 = 18 — 9 = 17 — 9 = 16 — 9 = 15 — 9 = 14 — 9 = 13 — 9 = 13 — 7 = 12 — 7 = 11 — 7 = 12 — 9 = 11 — 9 = 17 — 8 = （十四） 16 — 8 = 15 — 8 = 14 — 8 = 13 — 4 = 12 — 4 = 11 — 4 = 12 — 3 = 11 — 3 = 11 — 2 = 13 — 5 = 12 — 5 = 11 — 5 = 13 — 8 = 12 — 8 = 11 — 8 = 16 — 7 = 15 — 7 = 14 — 7 = （十五） 12 — 6 = 11 — 6 = 14 — 5 = 15 — 9 = 14 — 9 = 13 — 9 = 13 — 4 = 12 — 4 = 11 — 4 = 12 — 3 = 11 — 3 = 11 — 2 = 13 — 5 = 12 — 5 = 11 — 5 = 13 — 8 = 12 — 8 = 11 — 8 = （十六） 16 — 7 = 15 — 7 = 14 — 7 = 12 — 6 = 11 — 6 = 14 — 5 = 15 — 9 = 14 — 9 = 13 — 9 = 13 — 4 = 12 — 4 = 11 — 4 = 16 — 7 = 15 — 7 = 14 — 7 = 18 — 9 = 17 — 9 = 16 — 9 = （十七） 15 — 9 = 14 — 9 = 13 — 9 = 13 — 7 = 12 — 7 = 11 — 7 = 12 — 9 = 11 — 9 = 17 — 8 = 16 — 8 = 15 — 8 = 14 — 8 = 17

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