
1ºESO-Operaciones combinadas con números enteros
Flashcard
•
Mathematics
•
2nd Grade
•
Practice Problem
•
Easy
Eva Ruiz Boutefeu
Used 8+ times
FREE Resource
Student preview

10 questions
Show all answers
1.
FLASHCARD QUESTION
Front
6 – 10 : 2 – 14 : 7
Back
-1
Answer explanation
Ponemos los paréntesis según la jerarquía de las operaciones:
6 – (10 : 2) – (14 : 7) = 6 – 5 – 2 =
Podemos poner signos, si todavía no hemos "entrenado" suficente:
= (+6) - (+5) - (+2) =
Restar es sumar el opuesto:
= (+6) + (-5) + (-2) =
Recuerda el color de las fichas (rojas - y amarillas +) :
= (+1) + (-2) = -1
¡Ganan las rojas!
2.
FLASHCARD QUESTION
Front
Back
1
3.
FLASHCARD QUESTION
Front
(-3) - (-7) + (+9) - (-8) - (+25) - (-34)
Back
30
Answer explanation
Recuerda, restar es sumar el opuesto:
(-3) - (-7) + (+9) - (-8) - (+25) - (-34) =
(-3) + (+7) + (+9) + (+8) + (-25) + (+34)=
Son todo sumas, así que realizamos las operaciones de izquierda a derecha.
Recuerda el color de las fichas (rojas - y amarillas +) :
= (+4) + (+9) + (+8) + (-25) + (+34)=
= (+13) + (+8) + (-25) + (+34)=
= (+21) + (-25) + (+34)=
= (-4) + (+34) =
= (+30)
¡Ganan las amarillas!
4.
FLASHCARD QUESTION
Front
Back
9
5.
FLASHCARD QUESTION
Front
(-16) - [(+6) - (-4)]
Back
-26
Answer explanation
Hacemos primero la operación que está dentro del paréntesis o corchete:
(-16) - [(+6) - (-4)] =
Restar es sumar el opuesto:
= (-16) - [(+6) + (+4)] =
= (-16) - (+10) =
= (-16) + (-10) =
Recuerda el color de las fichas (rojas - y amarillas +) :
= (-26)
¡Ganan las rojas!
6.
FLASHCARD QUESTION
Front
Back
-1440
7.
FLASHCARD QUESTION
Front
Back
37
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