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¿Cuánto y cuánto forman 9?<br />

T 2-20<br />

9<br />

9 9<br />

2<br />

4<br />

7<br />

5<br />

3<br />

8<br />

6<br />

1<br />

5<br />

2<br />

1<br />

7<br />

3<br />

6<br />

4<br />

8<br />

a)<br />

b)<br />

c)<br />

d)<br />

5<br />

3<br />

Formo 9.<br />

a)3y5forman 9 b) 4y5forman 9 c) 2y2forman 9<br />

41

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