Respuesta:
7.- Calcula las siguientes sumas de números enteros como en el ejemplo:
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(-7) + (-3) = -7 –3 = -10
-7 - 3 = -7 - 3 = -10
-10 = -10 = -10
(-12 ) + (+15) = (-7 ) + (+3 ) = (-8 ) + (-7 ) = (+13 ) + (+8)
-12 + 15 = -7 + 3 = -8 - 7 = + 13 + 8
3 = - 4 = - 15 = 21
(+14 ) + ( -12) = (+4 ) + (- 16) = ( 0 ) + (-3 ) = (+4 ) + ( 0 )
14 - 12 = 4 - 16 = 0 - 3 = 4 + 0
2 = -12 = -3 = 4
8.- Indica las sumas que son incorrectas.
-2 + 4 = +2 -4 +1 = -3 -8 +3 = +5 -12 +5 = -7
2 = -2 + 1 = -11 + 3 = -7 + 5 = -7
2 = -1 = -8 = -2 = -7
-7 – 9 = -2 -4 –3 = -7 +16 – 8 = -24 -7 +16 = -9
-16 = -6 -3 = 9 -8 = -31 + 16 = -9
-16 = -9 = 1 = 15 = -9
9.- Calcula eliminando los paréntesis cuando sea preciso.
a) (+3) + (- 4) + (- 5) = + 3 - 4 - 5
b) (-6 ) + (-12) + (-1) =
c) (+3) + (+21) + (-15) =
d) (-5 ) + (+7) + (- 12) =
e) (+14) + (-9 ) + (- 7) =
f) (-12 ) + (- 6 ) + (+3 ) + (-1) =
g) (+5 ) + (-3 ) + (+14 ) + (-2 ) + (- 11) =
El resto, ya no puedo hacerlo por falta de coronita :c
Explicación paso a paso:
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Respuesta:
7.- Calcula las siguientes sumas de números enteros como en el ejemplo:
-----------------------------------------------------------------------------------------------------------
(-7) + (-3) = -7 –3 = -10
-7 - 3 = -7 - 3 = -10
-10 = -10 = -10
-----------------------------------------------------------------------------------------------------------
(-12 ) + (+15) = (-7 ) + (+3 ) = (-8 ) + (-7 ) = (+13 ) + (+8)
-12 + 15 = -7 + 3 = -8 - 7 = + 13 + 8
3 = - 4 = - 15 = 21
-----------------------------------------------------------------------------------------------------------
(+14 ) + ( -12) = (+4 ) + (- 16) = ( 0 ) + (-3 ) = (+4 ) + ( 0 )
14 - 12 = 4 - 16 = 0 - 3 = 4 + 0
2 = -12 = -3 = 4
-----------------------------------------------------------------------------------------------------------
8.- Indica las sumas que son incorrectas.
-----------------------------------------------------------------------------------------------------------
-2 + 4 = +2 -4 +1 = -3 -8 +3 = +5 -12 +5 = -7
2 = -2 + 1 = -11 + 3 = -7 + 5 = -7
2 = -1 = -8 = -2 = -7
-----------------------------------------------------------------------------------------------------------
-7 – 9 = -2 -4 –3 = -7 +16 – 8 = -24 -7 +16 = -9
-16 = -6 -3 = 9 -8 = -31 + 16 = -9
-16 = -9 = 1 = 15 = -9
-----------------------------------------------------------------------------------------------------------
9.- Calcula eliminando los paréntesis cuando sea preciso.
a) (+3) + (- 4) + (- 5) = + 3 - 4 - 5
b) (-6 ) + (-12) + (-1) =
c) (+3) + (+21) + (-15) =
d) (-5 ) + (+7) + (- 12) =
e) (+14) + (-9 ) + (- 7) =
f) (-12 ) + (- 6 ) + (+3 ) + (-1) =
g) (+5 ) + (-3 ) + (+14 ) + (-2 ) + (- 11) =
El resto, ya no puedo hacerlo por falta de coronita :c
Explicación paso a paso: