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Desafío de fracciones: operaciones

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Desafío de fracciones: operaciones

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Problemas de fracciones con suma, resta, multiplicación y división

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claudia ccopa
claudia ccopa
Peru

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Desafío de fracciones: operaciones
 

Desafío de fracciones: operacionesOnline version

Problemas de fracciones con suma, resta, multiplicación y división

by claudia ccopa
1

1) ¿Cuál es (1/3) + (2/5)?

2

2) Calcula (3/4) - (1/6).

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3) Multiplica (2/3) × (3/5).

4

4) ¿(7/8) ÷ (14/9) = ?

5

5) Suma: (1/2) + (3/7).

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6) Calcula (5/6) - (1/3).

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7) Multiplica (4/9) × (2/3).

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8) (3/4) ÷ (5/6) = ?

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9) Avanzado: ((1/2)+(1/3)) ÷ (1/4)

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10) ((3/4)+(5/6)) ÷ (1/3).

Explicación

La suma requiere denominadores comunes (15). 11/15 es la respuesta correcta; 7/15, 1/3 y 13/25 son incorrectos por no convertir correctamente.

Convierte a denom. 12: (9-2)/12 = 7/12. 1/2, 5/12 y 2/3 no corresponden al resultado.

Multiplica numeradores y denominadores: 2×3 / 3×5 = 6/15 = 2/5 tras simplificar. Las otras opciones no simplifican a 2/5.

Dividir por 14/9 equivale multiplicar por 9/14: (7/8)×(9/14)=63/112=9/16 tras simplificar.

Denominadores 14: (7+6)/14 = 13/14. Los otros no suman correctamente.

(5/6)-(2/6)=3/6=1/2. Las otras respuestas no forman la resta correcta.

Numeradores 4×2=8 y denominadores 9×3=27 → 8/27. Las demás no coinciden.

Dividir por 5/6 equivale multiplicar por 6/5: (3/4)×(6/5)=18/20=9/10.

(1/2+1/3)=5/6; (5/6)÷(1/4)=(5/6)×4=20/6=10/3.

(3/4+5/6)=(9+10)/12=19/12; ÷(1/3) = (19/12)×3=57/12=19/4. Otras opciones no equivalen.

 
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