IV – Simplifier les écritures puis calculer : 1) – 7 – ( – 3 ) = 5) ( + 4 ) + ( – 2 ) – ( + 2 )

April 2019 1 137 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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nonoduchablais Salut !

$1) -7-(-3)=-7+3=-4 \\ \\ 2)11-(+4)=11-4=7 \\ \\ 3)(+1)-(+10)=1-10=-9 \\ \\ 4)-4-(+2)=-4-2=-6 \\ \\ 5)(+4)+(-2)-(+2)-(-3) + (-8) = 4-2-2+3-8=-5 \\ \\ 6)(-25)-(-13)+(-9)+(+5)-(-9) = -25+13-9+5+9 = -7 \\ \\ 7)((-7.8)-(-2.4)+(+11.6)-(+0.4)+(-9.1) \\ =-7.8+2.4+11.6-0.4-9.1 \\ =-3.1$

$8)(5-3+9)-(-4+6+10-8)+(-2+7+15-1) \\ =11-4+19 \\ =26$

J'espère t'avoir aidé(e) ! :)