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Primero-Cuaderno-del-Alumno-optimizado

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T9<br />

Contesto<br />

1 Realizo los ejercicios.<br />

a) 20+40= b) 50+30<br />

c) 90-10 d) 90-30<br />

2 Calculo en forma vertical.<br />

a)70+29=<br />

Forma vertical<br />

b) 23 + 30<br />

Forma vertical<br />

c) 64 + 5<br />

Forma vertical<br />

d) 45 - 20<br />

Forma vertical<br />

e) 83 - 81<br />

Forma vertical<br />

f) 65 - 25<br />

Forma vertical<br />

124

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