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Practico restas con números de dos dígitos (1)<br />

T 9-7<br />

Observo y calculo en forma vertical.<br />

a)<br />

47<br />

- 3 0<br />

b)<br />

48<br />

- 2<br />

Ordeno<br />

unidades<br />

y decenas<br />

Calculo en forma vertical.<br />

a) 28<br />

- 10<br />

b) 56<br />

- 20<br />

c) 63<br />

- 50<br />

d) 36<br />

- 3<br />

e) 79<br />

- 4<br />

f) 87<br />

- 2<br />

Calculo en forma vertical.<br />

a) 39-20=<br />

39<br />

- 20<br />

b) 46-30<br />

c) 87-60<br />

d) 38 - 5<br />

e) 46 - 2<br />

f) 99 - 7<br />

Calculo en forma vertical.<br />

a) 58-30 b) 68-7 c) 74-2<br />

119

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