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Desafío de operaciones con números racionales

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Desafío de operaciones con números racionales

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Quiz de fracciones y reglas

Created by

DEISY VERÓNICA ROBLES TORRES
DEISY VERÓNICA ROBLES TORRES
Ecuador

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Desafío de operaciones con números racionales
 

Desafío de operaciones con números racionalesOnline version

Quiz de fracciones y reglas

by DEISY VERÓNICA ROBLES TORRES
1

Si (3/4) + (2/5) resulta en fracción, ¿cuál es el numerador tras convertir a común denominador 20?

2

( -2/3 ) × ( 9/4 ) = ?

3

Resuelve (1/2) ÷ (3/5)

4

Simplifica (4/7) − (2/7)

5

Si (3/8) + (5/12) = ?

6

( -4/5 ) ÷ ( -2/3 ) = ?

7

Resuelve (7/9) × (1/3) ÷ (2/5)

8

Orden de operaciones: 1/2 + 1/3 × 3/4

9

Convierte la resta: (4/5) − (9/10)

10

Si ( -3/4 ) × ( -8/9 ) = ?

Explicación

Se busca denominador 20: 3/4=15/20, 2/5=8/20, suma=23/20; simplificar a 23/20 no es posible, pero 19/20 es incorrecto. Corrección: 15/20+8/20=23/20.

(-2/3)*(9/4) = (-18/12) = -3/2. Simplifica según sea necesario.

Dividir por 3/5 es multiplicar por su recíproco: (1/2)*(5/3)=5/6.

Con mismo denominador, resta numéricos: 4−2=2; resultado 2/7.

Común denominador 24: 9/24+10/24=19/24; corregido: 3/8=9/24, 5/12=10/24, total 19/24.

Dividir negativos da positivo: (-4/5)*(-3/2)=12/10=6/5.

(7/9)*(1/3) = 7/27; dividir por 2/5 es multiplicar por 5/2: (7/27)*(5/2)=35/54.

Primero multiplica: (1/3)*(3/4)=1/4; luego 1/2+1/4=3/4; corregido: 3/4 no es 5/12; ajuste: escribir pregunta correcta.

Convertir a denom 10: 8/10−9/10=−1/10; corregido: la respuesta correcta es -1/10.

Producto de negativos es positivo: (24/36)=2/3.

 
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