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T 2-21<br />

¿Cuánto y cuánto forman 10? (1)<br />

9<br />

1<br />

9<br />

1<br />

10<br />

42<br />

Formo 10.<br />

a)6y5forman 10 b) 5y5forman 10 c) 2y3forman 10

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