July 2023 2 7 Report
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1. Realice las siguientes adiciones y sustracciones
a) ( +20 ) + ( -10 ) =
b) (- 8 ) + ( -3 ) + ( +10 ) =
c) ( +2 ) + ( -12 ) + ( -6 ) =
d) (- 5 ) + ( -10 ) + ( +3 ) =
e) ( +2 ) - ( -10 ) =
f) ( +20 ) - ( -10 ) =

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