Calcul mental - Eklablogekladata.com/3u30RVvhad1CbKmFxy7Whwxe9U4/4_CalculLitter...y = 3 x = 4 y = 8...
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1/21 Calcul mental Calcul litt´ eral : Remplacer une variable par sa valeur puis calculer Entraˆ ınement 1
Transcript of Calcul mental - Eklablogekladata.com/3u30RVvhad1CbKmFxy7Whwxe9U4/4_CalculLitter...y = 3 x = 4 y = 8...
1/21
Calcul mental
Calcul litteral :Remplacer une variable par sa valeur
puis calculer
Entraınement 1
2/21
Calcule 3× x + 2
y− 5
pour :
x = 0
y = 32
x = 6 y = 3
x = −4 y = −8
2/21
Calcule 3× x + 2
y− 5
pour :
x = 0 y = 32
x = 6
y = 3
x = −4 y = −8
2/21
Calcule 3× x + 2
y− 5
pour :
x = 0 y = 32
x = 6 y = 3
x = −4
y = −8
2/21
Calcule
3× x + 2
y− 5 pour :
x = 0
y = 32
x = 6 y = 3
x = −4 y = −8
2/21
Calcule
3× x + 2
y− 5 pour :
x = 0 y = 32
x = 6
y = 3
x = −4 y = −8
2/21
Calcule
3× x + 2
y− 5 pour :
x = 0 y = 32
x = 6 y = 3
x = −4
y = −8
3/21
Prenez votre stylo vert
4/21
Calcule 3× x + 2;
y− 5
pour :
x = 0
y = 32
3 × 0 + 2 = 0 + 2 = 2 32 − 5 = 27
x = 6 y = 3
3 × 6 + 2 = 18 + 2 = 20 3 − 5 = −2
x = −4 y = −8
3 × (−4) + 2 = −12 + 2 =−10
−8 − 5 = −13
4/21
Calcule 3× x + 2;
y− 5
pour :
x = 0
y = 32
3 × 0 + 2 = 0 + 2 = 2
32 − 5 = 27
x = 6 y = 3
3 × 6 + 2 = 18 + 2 = 20 3 − 5 = −2
x = −4 y = −8
3 × (−4) + 2 = −12 + 2 =−10
−8 − 5 = −13
4/21
Calcule 3× x + 2;
y− 5
pour :
x = 0
y = 32
3 × 0 + 2 = 0 + 2 = 2
32 − 5 = 27
x = 6
y = 3
3 × 6 + 2 = 18 + 2 = 20 3 − 5 = −2
x = −4 y = −8
3 × (−4) + 2 = −12 + 2 =−10
−8 − 5 = −13
4/21
Calcule 3× x + 2;
y− 5
pour :
x = 0
y = 32
3 × 0 + 2 = 0 + 2 = 2
32 − 5 = 27
x = 6
y = 3
3 × 6 + 2 = 18 + 2 = 20
3 − 5 = −2
x = −4 y = −8
3 × (−4) + 2 = −12 + 2 =−10
−8 − 5 = −13
4/21
Calcule 3× x + 2;
y− 5
pour :
x = 0
y = 32
3 × 0 + 2 = 0 + 2 = 2
32 − 5 = 27
x = 6
y = 3
3 × 6 + 2 = 18 + 2 = 20
3 − 5 = −2
x = −4
y = −8
3 × (−4) + 2 = −12 + 2 =−10
−8 − 5 = −13
4/21
Calcule 3× x + 2;
y− 5
pour :
x = 0
y = 32
3 × 0 + 2 = 0 + 2 = 2
32 − 5 = 27
x = 6
y = 3
3 × 6 + 2 = 18 + 2 = 20
3 − 5 = −2
x = −4
y = −8
3 × (−4) + 2 = −12 + 2 =−10
−8 − 5 = −13
4/21
Calcule 3× x + 2; y− 5 pour :
x = 0 y = 32
3 × 0 + 2 = 0 + 2 = 2
32 − 5 = 27
x = 6
y = 3
3 × 6 + 2 = 18 + 2 = 20
3 − 5 = −2
x = −4
y = −8
3 × (−4) + 2 = −12 + 2 =−10
−8 − 5 = −13
4/21
Calcule 3× x + 2; y− 5 pour :
x = 0 y = 32
3 × 0 + 2 = 0 + 2 = 2 32 − 5 = 27
x = 6
y = 3
3 × 6 + 2 = 18 + 2 = 20
3 − 5 = −2
x = −4
y = −8
3 × (−4) + 2 = −12 + 2 =−10
−8 − 5 = −13
4/21
Calcule 3× x + 2; y− 5 pour :
x = 0 y = 32
3 × 0 + 2 = 0 + 2 = 2 32 − 5 = 27
x = 6 y = 3
3 × 6 + 2 = 18 + 2 = 20
3 − 5 = −2
x = −4
y = −8
3 × (−4) + 2 = −12 + 2 =−10
−8 − 5 = −13
4/21
Calcule 3× x + 2; y− 5 pour :
x = 0 y = 32
3 × 0 + 2 = 0 + 2 = 2 32 − 5 = 27
x = 6 y = 3
3 × 6 + 2 = 18 + 2 = 20 3 − 5 = −2
x = −4
y = −8
3 × (−4) + 2 = −12 + 2 =−10
−8 − 5 = −13
4/21
Calcule 3× x + 2; y− 5 pour :
x = 0 y = 32
3 × 0 + 2 = 0 + 2 = 2 32 − 5 = 27
x = 6 y = 3
3 × 6 + 2 = 18 + 2 = 20 3 − 5 = −2
x = −4 y = −8
3 × (−4) + 2 = −12 + 2 =−10
−8 − 5 = −13
4/21
Calcule 3× x + 2; y− 5 pour :
x = 0 y = 32
3 × 0 + 2 = 0 + 2 = 2 32 − 5 = 27
x = 6 y = 3
3 × 6 + 2 = 18 + 2 = 20 3 − 5 = −2
x = −4 y = −8
3 × (−4) + 2 = −12 + 2 =−10
−8 − 5 = −13
5/21
Calcul mental
Calcul litteral :Remplacer une variable par sa valeur
puis calculer
Entraınement 2
6/21
Calcule (x + 0, 5)× 2
5y− 35
pour :
x = 3
y = 7
x = 5, 5 y = 10
x = −4 y = 4
6/21
Calcule (x + 0, 5)× 2
5y− 35
pour :
x = 3 y = 7
x = 5, 5
y = 10
x = −4 y = 4
6/21
Calcule (x + 0, 5)× 2
5y− 35
pour :
x = 3 y = 7
x = 5, 5 y = 10
x = −4
y = 4
6/21
Calcule
(x + 0, 5)× 2
5y− 35 pour :
x = 3
y = 7
x = 5, 5 y = 10
x = −4 y = 4
6/21
Calcule
(x + 0, 5)× 2
5y− 35 pour :
x = 3 y = 7
x = 5, 5
y = 10
x = −4 y = 4
6/21
Calcule
(x + 0, 5)× 2
5y− 35 pour :
x = 3 y = 7
x = 5, 5 y = 10
x = −4
y = 4
7/21
Prenez votre stylo vert
8/21
Calcule (x + 0, 5)× 2 ;
5y− 35
pour :
x = 3
y = 7
(3 + 0, 5) × 2 = 3, 5 × 2 = 7 5 × 7 − 35 = 35 − 35 = 0
x = 5, 5 y = 10
(5, 5 + 0, 5)×2 = 6×2 = 12 5 × 10 − 35 = 50 − 35 = 15
x = −4 y = 4
(−4 + 0, 5) × 2 =−3, 5 × 2 = −7
5 × 4 − 35 = 20 − 35 = −15
8/21
Calcule (x + 0, 5)× 2 ;
5y− 35
pour :
x = 3
y = 7
(3 + 0, 5) × 2 = 3, 5 × 2 = 7
5 × 7 − 35 = 35 − 35 = 0
x = 5, 5 y = 10
(5, 5 + 0, 5)×2 = 6×2 = 12 5 × 10 − 35 = 50 − 35 = 15
x = −4 y = 4
(−4 + 0, 5) × 2 =−3, 5 × 2 = −7
5 × 4 − 35 = 20 − 35 = −15
8/21
Calcule (x + 0, 5)× 2 ;
5y− 35
pour :
x = 3
y = 7
(3 + 0, 5) × 2 = 3, 5 × 2 = 7
5 × 7 − 35 = 35 − 35 = 0
x = 5, 5
y = 10
(5, 5 + 0, 5)×2 = 6×2 = 12 5 × 10 − 35 = 50 − 35 = 15
x = −4 y = 4
(−4 + 0, 5) × 2 =−3, 5 × 2 = −7
5 × 4 − 35 = 20 − 35 = −15
8/21
Calcule (x + 0, 5)× 2 ;
5y− 35
pour :
x = 3
y = 7
(3 + 0, 5) × 2 = 3, 5 × 2 = 7
5 × 7 − 35 = 35 − 35 = 0
x = 5, 5
y = 10
(5, 5 + 0, 5)×2 = 6×2 = 12
5 × 10 − 35 = 50 − 35 = 15
x = −4 y = 4
(−4 + 0, 5) × 2 =−3, 5 × 2 = −7
5 × 4 − 35 = 20 − 35 = −15
8/21
Calcule (x + 0, 5)× 2 ;
5y− 35
pour :
x = 3
y = 7
(3 + 0, 5) × 2 = 3, 5 × 2 = 7
5 × 7 − 35 = 35 − 35 = 0
x = 5, 5
y = 10
(5, 5 + 0, 5)×2 = 6×2 = 12
5 × 10 − 35 = 50 − 35 = 15
x = −4
y = 4
(−4 + 0, 5) × 2 =−3, 5 × 2 = −7
5 × 4 − 35 = 20 − 35 = −15
8/21
Calcule (x + 0, 5)× 2 ;
5y− 35
pour :
x = 3
y = 7
(3 + 0, 5) × 2 = 3, 5 × 2 = 7
5 × 7 − 35 = 35 − 35 = 0
x = 5, 5
y = 10
(5, 5 + 0, 5)×2 = 6×2 = 12
5 × 10 − 35 = 50 − 35 = 15
x = −4
y = 4
(−4 + 0, 5) × 2 =−3, 5 × 2 = −7
5 × 4 − 35 = 20 − 35 = −15
8/21
Calcule (x + 0, 5)× 2 ; 5y− 35 pour :
x = 3 y = 7
(3 + 0, 5) × 2 = 3, 5 × 2 = 7
5 × 7 − 35 = 35 − 35 = 0
x = 5, 5
y = 10
(5, 5 + 0, 5)×2 = 6×2 = 12
5 × 10 − 35 = 50 − 35 = 15
x = −4
y = 4
(−4 + 0, 5) × 2 =−3, 5 × 2 = −7
5 × 4 − 35 = 20 − 35 = −15
8/21
Calcule (x + 0, 5)× 2 ; 5y− 35 pour :
x = 3 y = 7
(3 + 0, 5) × 2 = 3, 5 × 2 = 7 5 × 7 − 35 = 35 − 35 = 0
x = 5, 5
y = 10
(5, 5 + 0, 5)×2 = 6×2 = 12
5 × 10 − 35 = 50 − 35 = 15
x = −4
y = 4
(−4 + 0, 5) × 2 =−3, 5 × 2 = −7
5 × 4 − 35 = 20 − 35 = −15
8/21
Calcule (x + 0, 5)× 2 ; 5y− 35 pour :
x = 3 y = 7
(3 + 0, 5) × 2 = 3, 5 × 2 = 7 5 × 7 − 35 = 35 − 35 = 0
x = 5, 5 y = 10
(5, 5 + 0, 5)×2 = 6×2 = 12
5 × 10 − 35 = 50 − 35 = 15
x = −4
y = 4
(−4 + 0, 5) × 2 =−3, 5 × 2 = −7
5 × 4 − 35 = 20 − 35 = −15
8/21
Calcule (x + 0, 5)× 2 ; 5y− 35 pour :
x = 3 y = 7
(3 + 0, 5) × 2 = 3, 5 × 2 = 7 5 × 7 − 35 = 35 − 35 = 0
x = 5, 5 y = 10
(5, 5 + 0, 5)×2 = 6×2 = 12 5 × 10 − 35 = 50 − 35 = 15
x = −4
y = 4
(−4 + 0, 5) × 2 =−3, 5 × 2 = −7
5 × 4 − 35 = 20 − 35 = −15
8/21
Calcule (x + 0, 5)× 2 ; 5y− 35 pour :
x = 3 y = 7
(3 + 0, 5) × 2 = 3, 5 × 2 = 7 5 × 7 − 35 = 35 − 35 = 0
x = 5, 5 y = 10
(5, 5 + 0, 5)×2 = 6×2 = 12 5 × 10 − 35 = 50 − 35 = 15
x = −4 y = 4
(−4 + 0, 5) × 2 =−3, 5 × 2 = −7
5 × 4 − 35 = 20 − 35 = −15
8/21
Calcule (x + 0, 5)× 2 ; 5y− 35 pour :
x = 3 y = 7
(3 + 0, 5) × 2 = 3, 5 × 2 = 7 5 × 7 − 35 = 35 − 35 = 0
x = 5, 5 y = 10
(5, 5 + 0, 5)×2 = 6×2 = 12 5 × 10 − 35 = 50 − 35 = 15
x = −4 y = 4
(−4 + 0, 5) × 2 =−3, 5 × 2 = −7
5 × 4 − 35 = 20 − 35 = −15
9/21
Calcul mental
Calcul litteral :Remplacer une variable par sa valeur
puis calculer
Entraınement 3
10/21
Calcule (x + 2)× x
7y− 3
pour :
x = 10
y = 7
x = −2 y = 4
x = 9 y = 8
10/21
Calcule (x + 2)× x
7y− 3
pour :
x = 10 y = 7
x = −2
y = 4
x = 9 y = 8
10/21
Calcule (x + 2)× x
7y− 3
pour :
x = 10 y = 7
x = −2 y = 4
x = 9
y = 8
10/21
Calcule
(x + 2)× x
7y− 3 pour :
x = 10
y = 7
x = −2 y = 4
x = 9 y = 8
10/21
Calcule
(x + 2)× x
7y− 3 pour :
x = 10 y = 7
x = −2
y = 4
x = 9 y = 8
10/21
Calcule
(x + 2)× x
7y− 3 pour :
x = 10 y = 7
x = −2 y = 4
x = 9
y = 8
11/21
Prenez votre stylo vert
12/21
Calcule (x + 2)× x ;
7y− 3
pour :
x = 10
y = 7
(10+2)×10 = 12×10 = 120 7 × 7 − 3 = 49 − 3 = 46
x = −2 y = 4
(−2 + 2) × (−2) =0 × (−2) = 0
7 × 4 − 3 = 28 − 3 = 25
x = 9 y = 8
(9 + 2) × 9 = 11 × 9 = 99 7 × 8 − 3 = 56 − 3 = 53
12/21
Calcule (x + 2)× x ;
7y− 3
pour :
x = 10
y = 7
(10+2)×10 = 12×10 = 120
7 × 7 − 3 = 49 − 3 = 46
x = −2 y = 4
(−2 + 2) × (−2) =0 × (−2) = 0
7 × 4 − 3 = 28 − 3 = 25
x = 9 y = 8
(9 + 2) × 9 = 11 × 9 = 99 7 × 8 − 3 = 56 − 3 = 53
12/21
Calcule (x + 2)× x ;
7y− 3
pour :
x = 10
y = 7
(10+2)×10 = 12×10 = 120
7 × 7 − 3 = 49 − 3 = 46
x = −2
y = 4
(−2 + 2) × (−2) =0 × (−2) = 0
7 × 4 − 3 = 28 − 3 = 25
x = 9 y = 8
(9 + 2) × 9 = 11 × 9 = 99 7 × 8 − 3 = 56 − 3 = 53
12/21
Calcule (x + 2)× x ;
7y− 3
pour :
x = 10
y = 7
(10+2)×10 = 12×10 = 120
7 × 7 − 3 = 49 − 3 = 46
x = −2
y = 4
(−2 + 2) × (−2) =0 × (−2) = 0
7 × 4 − 3 = 28 − 3 = 25
x = 9 y = 8
(9 + 2) × 9 = 11 × 9 = 99 7 × 8 − 3 = 56 − 3 = 53
12/21
Calcule (x + 2)× x ;
7y− 3
pour :
x = 10
y = 7
(10+2)×10 = 12×10 = 120
7 × 7 − 3 = 49 − 3 = 46
x = −2
y = 4
(−2 + 2) × (−2) =0 × (−2) = 0
7 × 4 − 3 = 28 − 3 = 25
x = 9
y = 8
(9 + 2) × 9 = 11 × 9 = 99 7 × 8 − 3 = 56 − 3 = 53
12/21
Calcule (x + 2)× x ;
7y− 3
pour :
x = 10
y = 7
(10+2)×10 = 12×10 = 120
7 × 7 − 3 = 49 − 3 = 46
x = −2
y = 4
(−2 + 2) × (−2) =0 × (−2) = 0
7 × 4 − 3 = 28 − 3 = 25
x = 9
y = 8
(9 + 2) × 9 = 11 × 9 = 99
7 × 8 − 3 = 56 − 3 = 53
12/21
Calcule (x + 2)× x ; 7y− 3 pour :
x = 10 y = 7
(10+2)×10 = 12×10 = 120
7 × 7 − 3 = 49 − 3 = 46
x = −2
y = 4
(−2 + 2) × (−2) =0 × (−2) = 0
7 × 4 − 3 = 28 − 3 = 25
x = 9
y = 8
(9 + 2) × 9 = 11 × 9 = 99
7 × 8 − 3 = 56 − 3 = 53
12/21
Calcule (x + 2)× x ; 7y− 3 pour :
x = 10 y = 7
(10+2)×10 = 12×10 = 120 7 × 7 − 3 = 49 − 3 = 46
x = −2
y = 4
(−2 + 2) × (−2) =0 × (−2) = 0
7 × 4 − 3 = 28 − 3 = 25
x = 9
y = 8
(9 + 2) × 9 = 11 × 9 = 99
7 × 8 − 3 = 56 − 3 = 53
12/21
Calcule (x + 2)× x ; 7y− 3 pour :
x = 10 y = 7
(10+2)×10 = 12×10 = 120 7 × 7 − 3 = 49 − 3 = 46
x = −2 y = 4
(−2 + 2) × (−2) =0 × (−2) = 0
7 × 4 − 3 = 28 − 3 = 25
x = 9
y = 8
(9 + 2) × 9 = 11 × 9 = 99
7 × 8 − 3 = 56 − 3 = 53
12/21
Calcule (x + 2)× x ; 7y− 3 pour :
x = 10 y = 7
(10+2)×10 = 12×10 = 120 7 × 7 − 3 = 49 − 3 = 46
x = −2 y = 4
(−2 + 2) × (−2) =0 × (−2) = 0
7 × 4 − 3 = 28 − 3 = 25
x = 9
y = 8
(9 + 2) × 9 = 11 × 9 = 99
7 × 8 − 3 = 56 − 3 = 53
12/21
Calcule (x + 2)× x ; 7y− 3 pour :
x = 10 y = 7
(10+2)×10 = 12×10 = 120 7 × 7 − 3 = 49 − 3 = 46
x = −2 y = 4
(−2 + 2) × (−2) =0 × (−2) = 0
7 × 4 − 3 = 28 − 3 = 25
x = 9 y = 8
(9 + 2) × 9 = 11 × 9 = 99
7 × 8 − 3 = 56 − 3 = 53
12/21
Calcule (x + 2)× x ; 7y− 3 pour :
x = 10 y = 7
(10+2)×10 = 12×10 = 120 7 × 7 − 3 = 49 − 3 = 46
x = −2 y = 4
(−2 + 2) × (−2) =0 × (−2) = 0
7 × 4 − 3 = 28 − 3 = 25
x = 9 y = 8
(9 + 2) × 9 = 11 × 9 = 99 7 × 8 − 3 = 56 − 3 = 53
13/21
Calcul mental
Calcul litteral :Remplacer une variable par sa valeur
puis calculer
Entraınement 4
14/21
Calcule (x− 3)× 0, 5
y× y− 50
pour :
x = 7
y = 7
x = 24 y = 9
x = 0 y = 5
14/21
Calcule (x− 3)× 0, 5
y× y− 50
pour :
x = 7 y = 7
x = 24
y = 9
x = 0 y = 5
14/21
Calcule (x− 3)× 0, 5
y× y− 50
pour :
x = 7 y = 7
x = 24 y = 9
x = 0
y = 5
14/21
Calcule
(x− 3)× 0, 5
y× y− 50 pour :
x = 7
y = 7
x = 24 y = 9
x = 0 y = 5
14/21
Calcule
(x− 3)× 0, 5
y× y− 50 pour :
x = 7 y = 7
x = 24
y = 9
x = 0 y = 5
14/21
Calcule
(x− 3)× 0, 5
y× y− 50 pour :
x = 7 y = 7
x = 24 y = 9
x = 0
y = 5
15/21
Prenez votre stylo vert
16/21
Calcule (x− 3)× 0, 5 ;
y× y− 50
pour :
x = 7
y = 7
(7 − 3) × 0, 5 = 4 × 0, 5 = 2 7 × 7 − 50 = 49 − 50 = −1
x = 24 y = 9
(24 − 3) × 0, 5 = 21 × 0, 5 =10, 5
9 × 9 − 50 = 81 − 50 = 31
x = 0 y = 5
(0 − 3) × 0, 5 = −3 × 0, 5 =−1, 5
5 × 5 − 50 = 25 − 50 = −25
16/21
Calcule (x− 3)× 0, 5 ;
y× y− 50
pour :
x = 7
y = 7
(7 − 3) × 0, 5 = 4 × 0, 5 = 2
7 × 7 − 50 = 49 − 50 = −1
x = 24 y = 9
(24 − 3) × 0, 5 = 21 × 0, 5 =10, 5
9 × 9 − 50 = 81 − 50 = 31
x = 0 y = 5
(0 − 3) × 0, 5 = −3 × 0, 5 =−1, 5
5 × 5 − 50 = 25 − 50 = −25
16/21
Calcule (x− 3)× 0, 5 ;
y× y− 50
pour :
x = 7
y = 7
(7 − 3) × 0, 5 = 4 × 0, 5 = 2
7 × 7 − 50 = 49 − 50 = −1
x = 24
y = 9
(24 − 3) × 0, 5 = 21 × 0, 5 =10, 5
9 × 9 − 50 = 81 − 50 = 31
x = 0 y = 5
(0 − 3) × 0, 5 = −3 × 0, 5 =−1, 5
5 × 5 − 50 = 25 − 50 = −25
16/21
Calcule (x− 3)× 0, 5 ;
y× y− 50
pour :
x = 7
y = 7
(7 − 3) × 0, 5 = 4 × 0, 5 = 2
7 × 7 − 50 = 49 − 50 = −1
x = 24
y = 9
(24 − 3) × 0, 5 = 21 × 0, 5 =10, 5
9 × 9 − 50 = 81 − 50 = 31
x = 0 y = 5
(0 − 3) × 0, 5 = −3 × 0, 5 =−1, 5
5 × 5 − 50 = 25 − 50 = −25
16/21
Calcule (x− 3)× 0, 5 ;
y× y− 50
pour :
x = 7
y = 7
(7 − 3) × 0, 5 = 4 × 0, 5 = 2
7 × 7 − 50 = 49 − 50 = −1
x = 24
y = 9
(24 − 3) × 0, 5 = 21 × 0, 5 =10, 5
9 × 9 − 50 = 81 − 50 = 31
x = 0
y = 5
(0 − 3) × 0, 5 = −3 × 0, 5 =−1, 5
5 × 5 − 50 = 25 − 50 = −25
16/21
Calcule (x− 3)× 0, 5 ;
y× y− 50
pour :
x = 7
y = 7
(7 − 3) × 0, 5 = 4 × 0, 5 = 2
7 × 7 − 50 = 49 − 50 = −1
x = 24
y = 9
(24 − 3) × 0, 5 = 21 × 0, 5 =10, 5
9 × 9 − 50 = 81 − 50 = 31
x = 0
y = 5
(0 − 3) × 0, 5 = −3 × 0, 5 =−1, 5
5 × 5 − 50 = 25 − 50 = −25
16/21
Calcule (x− 3)× 0, 5 ; y× y− 50 pour :
x = 7 y = 7
(7 − 3) × 0, 5 = 4 × 0, 5 = 2
7 × 7 − 50 = 49 − 50 = −1
x = 24
y = 9
(24 − 3) × 0, 5 = 21 × 0, 5 =10, 5
9 × 9 − 50 = 81 − 50 = 31
x = 0
y = 5
(0 − 3) × 0, 5 = −3 × 0, 5 =−1, 5
5 × 5 − 50 = 25 − 50 = −25
16/21
Calcule (x− 3)× 0, 5 ; y× y− 50 pour :
x = 7 y = 7
(7 − 3) × 0, 5 = 4 × 0, 5 = 2 7 × 7 − 50 = 49 − 50 = −1
x = 24
y = 9
(24 − 3) × 0, 5 = 21 × 0, 5 =10, 5
9 × 9 − 50 = 81 − 50 = 31
x = 0
y = 5
(0 − 3) × 0, 5 = −3 × 0, 5 =−1, 5
5 × 5 − 50 = 25 − 50 = −25
16/21
Calcule (x− 3)× 0, 5 ; y× y− 50 pour :
x = 7 y = 7
(7 − 3) × 0, 5 = 4 × 0, 5 = 2 7 × 7 − 50 = 49 − 50 = −1
x = 24 y = 9
(24 − 3) × 0, 5 = 21 × 0, 5 =10, 5
9 × 9 − 50 = 81 − 50 = 31
x = 0
y = 5
(0 − 3) × 0, 5 = −3 × 0, 5 =−1, 5
5 × 5 − 50 = 25 − 50 = −25
16/21
Calcule (x− 3)× 0, 5 ; y× y− 50 pour :
x = 7 y = 7
(7 − 3) × 0, 5 = 4 × 0, 5 = 2 7 × 7 − 50 = 49 − 50 = −1
x = 24 y = 9
(24 − 3) × 0, 5 = 21 × 0, 5 =10, 5
9 × 9 − 50 = 81 − 50 = 31
x = 0
y = 5
(0 − 3) × 0, 5 = −3 × 0, 5 =−1, 5
5 × 5 − 50 = 25 − 50 = −25
16/21
Calcule (x− 3)× 0, 5 ; y× y− 50 pour :
x = 7 y = 7
(7 − 3) × 0, 5 = 4 × 0, 5 = 2 7 × 7 − 50 = 49 − 50 = −1
x = 24 y = 9
(24 − 3) × 0, 5 = 21 × 0, 5 =10, 5
9 × 9 − 50 = 81 − 50 = 31
x = 0 y = 5
(0 − 3) × 0, 5 = −3 × 0, 5 =−1, 5
5 × 5 − 50 = 25 − 50 = −25
16/21
Calcule (x− 3)× 0, 5 ; y× y− 50 pour :
x = 7 y = 7
(7 − 3) × 0, 5 = 4 × 0, 5 = 2 7 × 7 − 50 = 49 − 50 = −1
x = 24 y = 9
(24 − 3) × 0, 5 = 21 × 0, 5 =10, 5
9 × 9 − 50 = 81 − 50 = 31
x = 0 y = 5
(0 − 3) × 0, 5 = −3 × 0, 5 =−1, 5
5 × 5 − 50 = 25 − 50 = −25
17/21
Calcul mental
Calcul litteral :Remplacer une variable par sa valeur
puis calculer
Test
18/21
Calcule (x− 3)× 0, 5 ;
y× 6
;
(a + 4)× 3
pour :
x = 8
y = −5
x = 1 a = 2
x = −8 a = 5
y = 7 a = 0, 2
y = 0, 5 a = −6
18/21
Calcule (x− 3)× 0, 5 ;
y× 6
;
(a + 4)× 3
pour :
x = 8 y = −5
x = 1
a = 2
x = −8 a = 5
y = 7 a = 0, 2
y = 0, 5 a = −6
18/21
Calcule (x− 3)× 0, 5 ;
y× 6
;
(a + 4)× 3
pour :
x = 8 y = −5
x = 1 a = 2
x = −8
a = 5
y = 7 a = 0, 2
y = 0, 5 a = −6
18/21
Calcule
(x− 3)× 0, 5
; y× 6 ;
(a + 4)× 3
pour :
x = 8 y = −5
x = 1 a = 2
x = −8 a = 5
y = 7
a = 0, 2
y = 0, 5 a = −6
18/21
Calcule
(x− 3)× 0, 5
; y× 6 ;
(a + 4)× 3
pour :
x = 8 y = −5
x = 1 a = 2
x = −8 a = 5
y = 7 a = 0, 2
y = 0, 5
a = −6
18/21
Calcule
(x− 3)× 0, 5
; y× 6 ;
(a + 4)× 3
pour :
x = 8
y = −5
x = 1 a = 2
x = −8 a = 5
y = 7 a = 0, 2
y = 0, 5 a = −6
18/21
Calcule
(x− 3)× 0, 5
;
y× 6
; (a + 4)× 3
pour :
x = 8 y = −5
x = 1
a = 2
x = −8 a = 5
y = 7 a = 0, 2
y = 0, 5 a = −6
18/21
Calcule
(x− 3)× 0, 5
;
y× 6
; (a + 4)× 3
pour :
x = 8 y = −5
x = 1 a = 2
x = −8
a = 5
y = 7 a = 0, 2
y = 0, 5 a = −6
18/21
Calcule
(x− 3)× 0, 5
;
y× 6
; (a + 4)× 3
pour :
x = 8 y = −5
x = 1 a = 2
x = −8 a = 5
y = 7
a = 0, 2
y = 0, 5 a = −6
18/21
Calcule
(x− 3)× 0, 5
;
y× 6
; (a + 4)× 3
pour :
x = 8 y = −5
x = 1 a = 2
x = −8 a = 5
y = 7 a = 0, 2
y = 0, 5
a = −6
19/21
Posez votre stylo et faites passer les feuilles devant
20/21
Calcule (x− 3) × 0, 5 ;
y× 6
;
(a + 4) × 3
pour :
x = 8
y = −5
(8−3)×0, 5 = 5×0, 5 = 2, 5 −5 × 6 = −30
x = 1 a = 2
(1 − 3) × 0, 5 = −2 × 0, 5 =−1
(2 + 4) × 3 = 6 × 3 = 18
x = −8 a = 5
(−8 − 3) × 0, 5 =−11 × 0, 5 = −5, 5
(5 + 4) × 3 = 9 × 3 = 27
y = 7 a = 0, 2
7 × 6 = 42(0, 2 + 4) × 3 = 4, 2 × 3 =
12, 6
y = 0, 5 a = −6
0, 5 × 6 = 3 (−6 + 4)×3 = −2×3 = −6
20/21
Calcule (x− 3) × 0, 5 ;
y× 6
;
(a + 4) × 3
pour :
x = 8
y = −5
(8−3)×0, 5 = 5×0, 5 = 2, 5
−5 × 6 = −30
x = 1 a = 2
(1 − 3) × 0, 5 = −2 × 0, 5 =−1
(2 + 4) × 3 = 6 × 3 = 18
x = −8 a = 5
(−8 − 3) × 0, 5 =−11 × 0, 5 = −5, 5
(5 + 4) × 3 = 9 × 3 = 27
y = 7 a = 0, 2
7 × 6 = 42(0, 2 + 4) × 3 = 4, 2 × 3 =
12, 6
y = 0, 5 a = −6
0, 5 × 6 = 3 (−6 + 4)×3 = −2×3 = −6
20/21
Calcule (x− 3) × 0, 5 ;
y× 6
;
(a + 4) × 3
pour :
x = 8
y = −5
(8−3)×0, 5 = 5×0, 5 = 2, 5
−5 × 6 = −30
x = 1
a = 2
(1 − 3) × 0, 5 = −2 × 0, 5 =−1
(2 + 4) × 3 = 6 × 3 = 18
x = −8 a = 5
(−8 − 3) × 0, 5 =−11 × 0, 5 = −5, 5
(5 + 4) × 3 = 9 × 3 = 27
y = 7 a = 0, 2
7 × 6 = 42(0, 2 + 4) × 3 = 4, 2 × 3 =
12, 6
y = 0, 5 a = −6
0, 5 × 6 = 3 (−6 + 4)×3 = −2×3 = −6
20/21
Calcule (x− 3) × 0, 5 ;
y× 6
;
(a + 4) × 3
pour :
x = 8
y = −5
(8−3)×0, 5 = 5×0, 5 = 2, 5
−5 × 6 = −30
x = 1
a = 2
(1 − 3) × 0, 5 = −2 × 0, 5 =−1
(2 + 4) × 3 = 6 × 3 = 18
x = −8 a = 5
(−8 − 3) × 0, 5 =−11 × 0, 5 = −5, 5
(5 + 4) × 3 = 9 × 3 = 27
y = 7 a = 0, 2
7 × 6 = 42(0, 2 + 4) × 3 = 4, 2 × 3 =
12, 6
y = 0, 5 a = −6
0, 5 × 6 = 3 (−6 + 4)×3 = −2×3 = −6
20/21
Calcule (x− 3) × 0, 5 ;
y× 6
;
(a + 4) × 3
pour :
x = 8
y = −5
(8−3)×0, 5 = 5×0, 5 = 2, 5
−5 × 6 = −30
x = 1
a = 2
(1 − 3) × 0, 5 = −2 × 0, 5 =−1
(2 + 4) × 3 = 6 × 3 = 18
x = −8
a = 5
(−8 − 3) × 0, 5 =−11 × 0, 5 = −5, 5
(5 + 4) × 3 = 9 × 3 = 27
y = 7 a = 0, 2
7 × 6 = 42(0, 2 + 4) × 3 = 4, 2 × 3 =
12, 6
y = 0, 5 a = −6
0, 5 × 6 = 3 (−6 + 4)×3 = −2×3 = −6
20/21
Calcule (x− 3) × 0, 5 ;
y× 6
;
(a + 4) × 3
pour :
x = 8
y = −5
(8−3)×0, 5 = 5×0, 5 = 2, 5
−5 × 6 = −30
x = 1
a = 2
(1 − 3) × 0, 5 = −2 × 0, 5 =−1
(2 + 4) × 3 = 6 × 3 = 18
x = −8
a = 5
(−8 − 3) × 0, 5 =−11 × 0, 5 = −5, 5
(5 + 4) × 3 = 9 × 3 = 27
y = 7 a = 0, 2
7 × 6 = 42(0, 2 + 4) × 3 = 4, 2 × 3 =
12, 6
y = 0, 5 a = −6
0, 5 × 6 = 3 (−6 + 4)×3 = −2×3 = −6
20/21
Calcule (x− 3) × 0, 5 ; y× 6 ;
(a + 4) × 3
pour :
x = 8
y = −5
(8−3)×0, 5 = 5×0, 5 = 2, 5
−5 × 6 = −30
x = 1
a = 2
(1 − 3) × 0, 5 = −2 × 0, 5 =−1
(2 + 4) × 3 = 6 × 3 = 18
x = −8
a = 5
(−8 − 3) × 0, 5 =−11 × 0, 5 = −5, 5
(5 + 4) × 3 = 9 × 3 = 27
y = 7
a = 0, 2
7 × 6 = 42(0, 2 + 4) × 3 = 4, 2 × 3 =
12, 6
y = 0, 5 a = −6
0, 5 × 6 = 3 (−6 + 4)×3 = −2×3 = −6
20/21
Calcule (x− 3) × 0, 5 ; y× 6 ;
(a + 4) × 3
pour :
x = 8
y = −5
(8−3)×0, 5 = 5×0, 5 = 2, 5
−5 × 6 = −30
x = 1
a = 2
(1 − 3) × 0, 5 = −2 × 0, 5 =−1
(2 + 4) × 3 = 6 × 3 = 18
x = −8
a = 5
(−8 − 3) × 0, 5 =−11 × 0, 5 = −5, 5
(5 + 4) × 3 = 9 × 3 = 27
y = 7
a = 0, 2
7 × 6 = 42
(0, 2 + 4) × 3 = 4, 2 × 3 =12, 6
y = 0, 5 a = −6
0, 5 × 6 = 3 (−6 + 4)×3 = −2×3 = −6
20/21
Calcule (x− 3) × 0, 5 ; y× 6 ;
(a + 4) × 3
pour :
x = 8
y = −5
(8−3)×0, 5 = 5×0, 5 = 2, 5
−5 × 6 = −30
x = 1
a = 2
(1 − 3) × 0, 5 = −2 × 0, 5 =−1
(2 + 4) × 3 = 6 × 3 = 18
x = −8
a = 5
(−8 − 3) × 0, 5 =−11 × 0, 5 = −5, 5
(5 + 4) × 3 = 9 × 3 = 27
y = 7
a = 0, 2
7 × 6 = 42
(0, 2 + 4) × 3 = 4, 2 × 3 =12, 6
y = 0, 5
a = −6
0, 5 × 6 = 3 (−6 + 4)×3 = −2×3 = −6
20/21
Calcule (x− 3) × 0, 5 ; y× 6 ;
(a + 4) × 3
pour :
x = 8
y = −5
(8−3)×0, 5 = 5×0, 5 = 2, 5
−5 × 6 = −30
x = 1
a = 2
(1 − 3) × 0, 5 = −2 × 0, 5 =−1
(2 + 4) × 3 = 6 × 3 = 18
x = −8
a = 5
(−8 − 3) × 0, 5 =−11 × 0, 5 = −5, 5
(5 + 4) × 3 = 9 × 3 = 27
y = 7
a = 0, 2
7 × 6 = 42
(0, 2 + 4) × 3 = 4, 2 × 3 =12, 6
y = 0, 5
a = −6
0, 5 × 6 = 3
(−6 + 4)×3 = −2×3 = −6
20/21
Calcule (x− 3) × 0, 5 ; y× 6 ;
(a + 4) × 3
pour :
x = 8 y = −5
(8−3)×0, 5 = 5×0, 5 = 2, 5
−5 × 6 = −30
x = 1
a = 2
(1 − 3) × 0, 5 = −2 × 0, 5 =−1
(2 + 4) × 3 = 6 × 3 = 18
x = −8
a = 5
(−8 − 3) × 0, 5 =−11 × 0, 5 = −5, 5
(5 + 4) × 3 = 9 × 3 = 27
y = 7
a = 0, 2
7 × 6 = 42
(0, 2 + 4) × 3 = 4, 2 × 3 =12, 6
y = 0, 5
a = −6
0, 5 × 6 = 3
(−6 + 4)×3 = −2×3 = −6
20/21
Calcule (x− 3) × 0, 5 ; y× 6 ;
(a + 4) × 3
pour :
x = 8 y = −5
(8−3)×0, 5 = 5×0, 5 = 2, 5 −5 × 6 = −30
x = 1
a = 2
(1 − 3) × 0, 5 = −2 × 0, 5 =−1
(2 + 4) × 3 = 6 × 3 = 18
x = −8
a = 5
(−8 − 3) × 0, 5 =−11 × 0, 5 = −5, 5
(5 + 4) × 3 = 9 × 3 = 27
y = 7
a = 0, 2
7 × 6 = 42
(0, 2 + 4) × 3 = 4, 2 × 3 =12, 6
y = 0, 5
a = −6
0, 5 × 6 = 3
(−6 + 4)×3 = −2×3 = −6
20/21
Calcule (x− 3) × 0, 5 ; y× 6 ; (a + 4) × 3 pour :
x = 8 y = −5
(8−3)×0, 5 = 5×0, 5 = 2, 5 −5 × 6 = −30
x = 1 a = 2
(1 − 3) × 0, 5 = −2 × 0, 5 =−1
(2 + 4) × 3 = 6 × 3 = 18
x = −8
a = 5
(−8 − 3) × 0, 5 =−11 × 0, 5 = −5, 5
(5 + 4) × 3 = 9 × 3 = 27
y = 7
a = 0, 2
7 × 6 = 42
(0, 2 + 4) × 3 = 4, 2 × 3 =12, 6
y = 0, 5
a = −6
0, 5 × 6 = 3
(−6 + 4)×3 = −2×3 = −6
20/21
Calcule (x− 3) × 0, 5 ; y× 6 ; (a + 4) × 3 pour :
x = 8 y = −5
(8−3)×0, 5 = 5×0, 5 = 2, 5 −5 × 6 = −30
x = 1 a = 2
(1 − 3) × 0, 5 = −2 × 0, 5 =−1
(2 + 4) × 3 = 6 × 3 = 18
x = −8
a = 5
(−8 − 3) × 0, 5 =−11 × 0, 5 = −5, 5
(5 + 4) × 3 = 9 × 3 = 27
y = 7
a = 0, 2
7 × 6 = 42
(0, 2 + 4) × 3 = 4, 2 × 3 =12, 6
y = 0, 5
a = −6
0, 5 × 6 = 3
(−6 + 4)×3 = −2×3 = −6
20/21
Calcule (x− 3) × 0, 5 ; y× 6 ; (a + 4) × 3 pour :
x = 8 y = −5
(8−3)×0, 5 = 5×0, 5 = 2, 5 −5 × 6 = −30
x = 1 a = 2
(1 − 3) × 0, 5 = −2 × 0, 5 =−1
(2 + 4) × 3 = 6 × 3 = 18
x = −8 a = 5
(−8 − 3) × 0, 5 =−11 × 0, 5 = −5, 5
(5 + 4) × 3 = 9 × 3 = 27
y = 7
a = 0, 2
7 × 6 = 42
(0, 2 + 4) × 3 = 4, 2 × 3 =12, 6
y = 0, 5
a = −6
0, 5 × 6 = 3
(−6 + 4)×3 = −2×3 = −6
20/21
Calcule (x− 3) × 0, 5 ; y× 6 ; (a + 4) × 3 pour :
x = 8 y = −5
(8−3)×0, 5 = 5×0, 5 = 2, 5 −5 × 6 = −30
x = 1 a = 2
(1 − 3) × 0, 5 = −2 × 0, 5 =−1
(2 + 4) × 3 = 6 × 3 = 18
x = −8 a = 5
(−8 − 3) × 0, 5 =−11 × 0, 5 = −5, 5
(5 + 4) × 3 = 9 × 3 = 27
y = 7
a = 0, 2
7 × 6 = 42
(0, 2 + 4) × 3 = 4, 2 × 3 =12, 6
y = 0, 5
a = −6
0, 5 × 6 = 3
(−6 + 4)×3 = −2×3 = −6
20/21
Calcule (x− 3) × 0, 5 ; y× 6 ; (a + 4) × 3 pour :
x = 8 y = −5
(8−3)×0, 5 = 5×0, 5 = 2, 5 −5 × 6 = −30
x = 1 a = 2
(1 − 3) × 0, 5 = −2 × 0, 5 =−1
(2 + 4) × 3 = 6 × 3 = 18
x = −8 a = 5
(−8 − 3) × 0, 5 =−11 × 0, 5 = −5, 5
(5 + 4) × 3 = 9 × 3 = 27
y = 7 a = 0, 2
7 × 6 = 42
(0, 2 + 4) × 3 = 4, 2 × 3 =12, 6
y = 0, 5
a = −6
0, 5 × 6 = 3
(−6 + 4)×3 = −2×3 = −6
20/21
Calcule (x− 3) × 0, 5 ; y× 6 ; (a + 4) × 3 pour :
x = 8 y = −5
(8−3)×0, 5 = 5×0, 5 = 2, 5 −5 × 6 = −30
x = 1 a = 2
(1 − 3) × 0, 5 = −2 × 0, 5 =−1
(2 + 4) × 3 = 6 × 3 = 18
x = −8 a = 5
(−8 − 3) × 0, 5 =−11 × 0, 5 = −5, 5
(5 + 4) × 3 = 9 × 3 = 27
y = 7 a = 0, 2
7 × 6 = 42(0, 2 + 4) × 3 = 4, 2 × 3 =
12, 6
y = 0, 5
a = −6
0, 5 × 6 = 3
(−6 + 4)×3 = −2×3 = −6
20/21
Calcule (x− 3) × 0, 5 ; y× 6 ; (a + 4) × 3 pour :
x = 8 y = −5
(8−3)×0, 5 = 5×0, 5 = 2, 5 −5 × 6 = −30
x = 1 a = 2
(1 − 3) × 0, 5 = −2 × 0, 5 =−1
(2 + 4) × 3 = 6 × 3 = 18
x = −8 a = 5
(−8 − 3) × 0, 5 =−11 × 0, 5 = −5, 5
(5 + 4) × 3 = 9 × 3 = 27
y = 7 a = 0, 2
7 × 6 = 42(0, 2 + 4) × 3 = 4, 2 × 3 =
12, 6
y = 0, 5 a = −6
0, 5 × 6 = 3
(−6 + 4)×3 = −2×3 = −6
20/21
Calcule (x− 3) × 0, 5 ; y× 6 ; (a + 4) × 3 pour :
x = 8 y = −5
(8−3)×0, 5 = 5×0, 5 = 2, 5 −5 × 6 = −30
x = 1 a = 2
(1 − 3) × 0, 5 = −2 × 0, 5 =−1
(2 + 4) × 3 = 6 × 3 = 18
x = −8 a = 5
(−8 − 3) × 0, 5 =−11 × 0, 5 = −5, 5
(5 + 4) × 3 = 9 × 3 = 27
y = 7 a = 0, 2
7 × 6 = 42(0, 2 + 4) × 3 = 4, 2 × 3 =
12, 6
y = 0, 5 a = −6
0, 5 × 6 = 3 (−6 + 4)×3 = −2×3 = −6
21/21
Calcule (x− 3)× 0, 5 ; y× 6 ; (a + 4)× 3
pour :
x = 8 y = −5
x = 1 a = 2
x = −8 a = 5
y = 7 a = 0, 2
y = 0, 5 a = −6
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