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Operacions amb fraccions (1r ESO)

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Operacions amb fraccions (1r ESO)

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About this activity

Què saps de fraccions?

Created by

Judit Garcia Fortuny
Judit Garcia Fortuny
Spain

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Operacions amb fraccions (1r ESO)
 

Operacions amb fraccions (1r ESO)Online version

Què saps de fraccions?

by Judit Garcia Fortuny
1

Suma de fraccions amb denominadors diferents: 2/5 + 1/3. Quina és la resposta en fraccions simples?

2

Resta: 7/8 - 1/4. Quin és el resultat?

3

Multiplicació: 3/4 × 2/5. Quina és la forma més simple?

4

Divisió: (3/5) ÷ (9/10). Resultat?

5

Suma: 1+ 1/3 + 2/3. Quin és el resultat?

6

14/21. Quina és la forma més simple?

7

Suma: 2+1/4 +1/2. Quina és la resposta?

8

Denominadors igualats: 5/6 + 1/6. Quin és el resultat?

9

Divisió amb fraccions: (4/5) ÷ (2/3). Resultat?

10

Producte: (8/12) × (9/3). Quina és la forma simplificada?

Explicación

Cal trobar un denomí comú (15) i sumar els numeradors.

Converteix 1/4 a 2/8 i resta 7/8-2/8.

Multiplica numeradors i denominadors i simplifica.

Multiplica per l'invers de la segona fracció.

1+1/3 és 4/3; 4/3 + 2/3 = 6/3 = 2.

Troba el màxim comú divisor (7): 14/21 = 2/3.

Passa a mateix denominador, calcula les fraccions equivalents i suma.

Denominadors iguals;lements comú és 6 i sumes els numeradors.

Multiplica per l’invers de la segona fracció.

8/12 es simplifica a 2/3; 9/3 = 3; 2/3 × 3 = 2.

 
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