October 2018 1 10 Report
2) Calcula eliminando los paréntesis y utilice la ley de signos cuando sea preciso.
• (+3) + (- 4) + (- 5) =
• (-6 ) + (-12) + (-1) =
• (+3) + (+21) + (-15) =
• (-5 ) + (+7) + (- 12) =
• (+14) + (-9 ) + (- 7) =
• (-12 ) + (- 6 ) + (+3 ) + (-1) =
• (+5 ) + (-3 ) + (+14 ) + (-2 ) + (- 11) =
• +13 –5 + 4 –11 =
• +9 – 5 + 11 – 12 + 14 =
• -15 + 3 + 6 – 12 + 17 =

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