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小学一年级数学上册-凑十法-破十法-借十法-练习题

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【 练 习 题. 二 】 (破十法)

18 – 9 = 17 – 9 = 16 – 9 = 15 – 9 = 11 – 4=

14 – 9 = 13 – 9 = 12 – 9 = 11 – 9 = 12 – 3 =

17

– 8 = 13

– 8 =

15 – 7 =

11 – 7 =

12– 6 =

16 – 8 = 12 – 8 = 14 – 7 = 15 – 6 = – 6 = 15 – 8 = 11 – 8 = 13 – 7 = 14 – 6 = 14 – 5 = 14 – 8 = 16 – 7 = 12 – 7 = 13 – 6 = 13 – 5 = 11 – 3 = 11 – 2 = – 5 =

12 – 4=

13 – 4=

11 11

【 练 习 题. 三 】 (20以内退位减法)

破十法口诀:看大数,分出10;减小数,加剩数。

15 - 6 = 12 - 5 = 17 - 9 =

13 - 4 = 11

16 - 8 = 15

12 - 7 = 14

12 - 9 = 11

16 - 9 = 15

11 - 6 = 13

13 - 9 = 17 - 5 = 14 - 9 = 18 - 9 = 13 - 3 = - 8 = 13 - 4 = 14 - 8 = 14 - 7 = - 9 = - 7 = 12 - 4 = - 8 = - 5 = - 6=

【 练 习 题. 四 】 (凑十法)

1. 拆小数,凑大数

9 + 9 = 9 + 8 = 9 + 7 =

9 + 6 = 9 + 5 = 9 + 4 =

9 + 3 = 9 + 2 = 8 + 8 =

8 + 7 =

8 + 4 = 8 + 3 = 7 + 7 =

7 + 6 = 7 + 5 =

6 + 6 = 6 + 5 = 8 + 6 = 8 + 5 = 7 + 4 =

【 练 习 题. 五 】 (凑十法)

2. 拆大数,凑小数 9 + 9 = 8 + 9 = 7 + 9 =

6 + 9 = 5 + 9 = 4 + 9 =

3 + 9 = 2 + 9 = 8 + 8 =

7 + 8 = 6 + 8 = 5 + 8 =

4 + 8 = 3 + 8 = 7 + 7 =

6 + 7 = 5 + 7 = 4 + 7 = 6 + 6 = 5 + 6 =

【 练 习 题. 六 】 (凑十法)

5 + 6 =

6 + 6 =

6 + 8 =

7 + 7 =

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

小学一年级数学上册-凑十法-破十法-借十法-练习题

【练习题.二】(破十法)18–9=17–9=16–9=15–9=11–4=14–9=13–9=12–9=11–9=
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