April 2019 1 148 Report
IV – Simplifier les écritures puis calculer :
1) – 7 – ( – 3 ) = 5) ( + 4 ) + ( – 2 ) – ( + 2 ) – ( – 3 ) + ( – 8 ) =
2) 11 – ( + 4 ) = 6) ( – 25 ) – ( – 13 ) + ( – 9 ) + (+ 5 ) – ( – 9 ) =
3) ( + 1 ) – ( + 10 ) = 7) ( – 7,8 ) – ( – 2,4 ) + ( + 11,6 ) – ( + 0,4 ) + ( – 9,1 ) =
4) – 4 – ( + 2 ) = 8) ( 5 – 3 + 9 ) – ( – 4 + 6 + 10 – 8 ) + ( – 2 + 7 + 15 – 1 ) =
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