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Operaciones con signos, fracciones y decimales

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Operaciones con signos, fracciones y decimales

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Quiz de operaciones con signos, fracciones y decimales

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KIAM Academy
KIAM Academy
Mexico

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Operaciones con signos, fracciones y decimales
 

Operaciones con signos, fracciones y decimalesOnline version

Quiz de operaciones con signos, fracciones y decimales

by KIAM Academy
1

1) -5 + 3 = ?

2

2) 7 - (-4) = ?

3

3) (-3) * 2 = ?

4

4) 1/2 + 1/3 = ?

5

5) (-7)/(-2) = ?

6

6) 0.75 - (-0.25) = ?

7

7) (2/3) * (-9) = ?

8

8) 0.2 + (-0.5) = ?

9

9) (-1/4) * (-16) = ?

10

10) 5 + (-2) * 3 = ?

11

11) (1/2) - (3/4) = ?

12

12) (-0.6) - 0.2 = ?

13

13) (-3) + (-5) = ?

14

14) (2/5) ÷ (1/2) = ?

15

15) (-3/4) ÷ (-1/2) = ?

16

16) 0.25 * (-8) = ?

17

17) (-7) + 6 = ?

18

18) (3/8) + (5/8) = ?

19

19) (-0.9) * (-0.5) = ?

20

20) 1/3 + 2/3 - 1 = ?

Explicación

Incorrecto: suma de números con signos diferentes resta las magnitudes y conserva el signo del mayor.

Restar un negativo equivale a sumar su valor positivo.

Multiplicar signos diferentes da negativo.

Suma de fracciones con distinto denominador: convertir a un común.

Dividir dos números negativos da positivo.

Suma de 0.75 y 0.25 da 1.0.

Multiplicación de fracciones y entero: 2/3 * -9 = -6.

Suma de decimales con distinto signo restando magnitudes.

Producto de dos negativos da positivo.

Primero se multiplica: (-2)*3 = -6; luego 5 + (-6) = -1.

Común denom: 2 y 4; 1/2 - 3/4 = -1/4.

Resta de decimales con signo negativo.

La suma de dos negativos da negativo con magnitud sumada.

Dividir por una fracción es multiplicar por su inversa.

Dividir dos negativos da positivo; ( -3/4)/(-1/2) = 3/2.

Producto de positivo por negativo da negativo.

Suma de enteros: resta magnitudes con signo opuesto.

Denominadores iguales: (3+5)/8 = 1.

Producto de negativos da positivo.

(1/3+2/3)=1; 1-1=0.

 
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