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Operaciones con números enteros I

Authored by El taller de Dédalo

Mathematics

6th Grade

Used 10+ times

Operaciones con números enteros I
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10 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

13 + (-5) =

18

8

-18

-8

Answer explanation

13 + (-5) = 13 - 5 = 8

Cuando tengo un signo delante de un paréntesis:

  • - Si es +, quitamos el paréntesis y dejamos el signo de lo que estaba dentro.

  • - Si es-, quitamos el paréntesis y cambiamos el signo de lo que estaba dentro.

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

24 - (-7) =

31

-31

17

-17

Answer explanation

24 - (-7) = 24 + 7 = 31

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

4 + (-13) - 2 =

16

11

-11

15

Answer explanation

4 + (-13) - 2 = 4 - 13 - 2 = - 9 - 2 = - 11

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

(-5) + (-8) + (+6) =

19

7

-7

-9

Answer explanation

Como delante del (-5)no hay nada, se entiende que es de signo positivo:

(-5) + (-8) + (+6) = - 5 - 8 + 6 = - 13 + 6 = - 7

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

18 - (-6) + 2 - (+4) =

-22

10

30

22

Answer explanation

18 - (-6) + 2 - (+4) = 18 + 6 + 2 - 4 = 26 - 4 = 22

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

7 · (-3) =

10

-10

-21

21

Answer explanation

Para multiplicar y dividir números enteros, hay que tener en cuenta que:

  • + · + = +

  • + · - = -

  • - · + = -

  • - · - = +

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

(-14) : (+7) =

-28

21

  • - 2

2

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