20以内减法破十法练习题.doc

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20以内减法练****题（破十法）
7
例：15 — 8 =
5
10
2
18—9 = 17—9 =16 — 9 =
15— 9 = 14— 9 = 13— 9 =
12— 9 = 11— 9 = 17 —8 =
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16—8 = 15—8 = 14— 8 =
13—8 = 12—8 = 11—8 =
16 —7 = 15— 7 = 14—7 =
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13—7 = 12—7 = 11—7 =
15 — 6 = 14 — 6 = 13 — 6 =
12 — 6 = 11 — 6 = 14 — 5 =
13 — 5 = 12 — 5 = 11 — 5 =
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13 — 4 = 12 — 4 = 11 — 4 =
12 — 3 = 11 — 3 = 11 — 2 =
13 — 5 = 12 — 5 = 11 — 5 =