Remerciez-le!

Remerciez @Admin pour avoir partagé cet document gratuitement, de la manière la plus simple, en partageant sur les réseaux sociaux.

Mathsenligne.net OPERATIONS SUR LES NOMBRES RELATIFS EXERCICE 1 EXERCICE 1 Calc

Mathsenligne.net OPERATIONS SUR LES NOMBRES RELATIFS EXERCICE 1 EXERCICE 1 Calculer mentalement les produits suivants : a. –4  6 = b. –2  7 = c. 6  (–5) = d. 9  (–9) = e. –4  (–3) = f. –6  (–7) = g. –1  3 = h. –8  4 = i. –5  (–1) = j. –1547  0 = EXERCICE 2 Calculer mentalement les produits suivants : a. –25  4 = b. 4  (–125) = c. –0,5  (–8) = d. 0,25  (–12) = e. 0,2  (–46) = f. –9,8  100 = g. –1000  1,234 = h. –0,1  (–987) = i. –0,001  (–100) = j. 0,01  (–1999) = EXERCICE 3 Calculer à la machine les produits suivants : a. –6,78  1,24 = b. –4,61  (–8,92) = c. –7,25  7,25 = d. 42,5  (–90,2) = e. –1,01  (–2,02) = f. –1,365  3,99 = g. 92,5  (–71,2) = h. –9,9  (–97,2) = i. –0,084  (–250) = j. 909,09 (–101,01) = EXERCICE 4 Quel est le signe de chacun de ces produits ? (Attention, on ne demande pas de faire le calcul !) a. 4  (–7)  (–6)  5  3  POSITIF  NEGATIF b. 1,5 (–1,6)  (–1,9)  1,1  (–1,4)  POSITIF  NEGATIF c. 1  (–2)  3  (–4)  5  (–6)  7  (–8)  9  POSITIF  NEGATIF d. –9  (–8)  (–7)  (–6)  (–5)  4  3  2  1  POSITIF  NEGATIF e. (–3,14)  (–3,14)  (–3,14)  (–3,14)  (–3,14)  POSITIF  NEGATIF f. 9  8  7  6  5  4  3  2  (–1)  POSITIF  NEGATIF g. –9  9  (–9)  9  9  9  9  9  9  (–9)  POSITIF  NEGATIF h. 1 000 000 000  1 000 000 000  (–0,1)  POSITIF  NEGATIF i. 1,2  (–3,4)  5,6  7,8  9,1  2,3  (–4,5)  POSITIF  NEGATIF j. 9  8  7  6  5  4  3  2  1  0  POSITIF  NEGATIF EXERCICE 5 Calculer les produits suivants : a. –2  3  (–5)  8 = b. –6  (–1)  2  (–1)  (–5)  7 = c. –10  2  (–2)  5  (–3)  (–5)  (–7) = d. –1  (–2)  (–3)  5  10 = e. 10  (–0,1)  (–1000)  0,01  (–100) = EXERCICE 6 Calculer à la machine les produits suivants : a. –6,8  1,4  (–4,1)  (–8,2) = b. –7,5  7,5  2,5  (–90,2) = c. –1,1  (–2,2)  (–3,3)  4,4 = d. –14  (–1)  (–12)  (–1)  (–15)  (–1) = e. –19  16  (–12)  18  (–15)  0  (–19) = EXERCICE 7 Calculer les expressions suivantes : A = (–6 +9)  (5 – 12) B = 6 – [3  (–8)] C = –4  7 – (–2)  (–8) D = –7  5 – 3  11 E = –5  ( 7 – 13 + 2) F = 25 – (–2)  (–9)  3 EXERCICE 8 Calculer les expressions suivantes : A = (–8 + 12 – 5 + 7)  (11 – 13 – 7 – 2) B = –7  3 – 9  (–5) + (–4)  9 – 7 C = 6 – [–4  (–3) + 5  (–2)]  (–4) Mathsenligne.net OPERATIONS SUR LES NOMBRES RELATIFS EXERCICE 1 CORRIGE – M. QUET EXERCICE 1 Calculer mentalement les produits suivants : a. –4  6 = –24 b. –2  7 = –14 c. 6  (–5) = –30 d. 9  (–9) = –81 e. –4  (–3) = +12 f. –6  (–7) = +42 g. –1  3 = –3 h. –8  4 = –32 i. –5  (–1) = +5 j. –1547  0 = 0 EXERCICE 2 Calculer mentalement les produits suivants : –25  4 = –100 4  (–125) = –500 –0,5  (–8) = +4 0,25  (–12) = –3 0,2  (–46) = –9,2 –9,8  100 = –980 –1000  1,234= –1234 –0,1  (–987) = +98,7 –0,001  (–100) = +0,1 0,01  (–1999) = –19,99 EXERCICE 3 Calculer à la machine les produits suivants : –6,78  1,24 = –8,4072 –4,61  (–8,92)=+41,1212 –7,25  7,25 = –52,5625 42,5  (–90,2) = –3833,5 –1,01  (–2,02) =+2,0402 –1,365  3,99 =–5,446 35 92,5  (–71,2) = –6,586 –9,9  (–97,2) = +962,28 –0,084  (–250) = +21 909,09 (–101,01) = –91 827,180 9 EXERCICE 4 Quel est le signe de chacun de ces produits ? a. 4  (–7)  (–6)  5  3 2 facteurs négatifs  POSITIF  NEGATIF b. 1,5 (–1,6)  (–1,9)  1,1  (–1,4)  POSITIF  NEGATIF c. 1  (–2)  3  (–4)  5  (–6)  7  (–8)  9  POSITIF  NEGATIF d. –9  (–8)  (–7)  (–6)  (–5)  4  3  2  1  POSITIF  NEGATIF e. (–3,14)  (–3,14)  (–3,14)  (–3,14)  (–3,14)  POSITIF  NEGATIF f. 9  8  7  6  5  4  3  2  (–1)  POSITIF  NEGATIF g. –9  9  (–9)  9  9  9  9  9  9  (–9)  POSITIF  NEGATIF h. 1 000 000 000  1 000 000 000  (–0,1)  POSITIF  NEGATIF i. 1,2  (–3,4)  5,6  7,8  9,1  2,3  (–4,5)  POSITIF  NEGATIF j. 9  8  7  6  5  4  3  2  1  0  POSITIF  NEGATIF EXERCICE 5 : D’ABORD GERER LE SIGNE DU PRODUIT a.           2 5 3 8 10 2 2 3 8 4 5 240 b.                 2 5 6 1 1 7 10 42 6 1 2 1 5 7 420 c.                      10 2 5 2 5 3 7 10 10 10 21 10 2 2 5 3 5 7 21 000 d.                2 5 10 1 3 10 10 3 1 2 3 5 10 300 e.      , , , ,               10 0 1 0 01 100 1000 1 1 10 0 1 100 1000 0 01 1 0 00 1000 EXERCICE 6 : Calcul à la machine : –6,8  1,4  (–4,1)  (–8,2) = –320,062 4 –7,5  7,5  2,5  (–90,2) = 12 684,375 –1,1  (–2,2)  (–3,3)  4,4 = –35,138 4 –14  (–1)  (–12)  (–1)  (–15)  (–1) = 2520 –19  16  (–12)  18  (–15)  0  (–19) = 0 EXERCICE 7 A = (–6 +9)  (5 – 12) A = 3  (–7) A =–21 B = 6 – [3  (–8)] B = 6 – [–24] B = 6 + 24 B = 30 C = –4  7 – (–2)  (–8) C = –28 – 16 C = –44 D = –7  5 – 3  11 D = –35 – 33 D = –68 E = –5  ( 7 – 13 + 2) E = –5  (–6 + 2) E = –5  (–4) E = 20 F = 25 – (–2)  (–9)  3 F = 25 – 18  3 F = 25 – 54 F = –29 EXERCICE 8 A = (–8 + 12 – 5 + 7)  (11 – 13 – 7 – 2) A = (4 – 5 + 7)  (–2 – 7 – 2) A = (–1 + 7)  (–9 – 2) A = 6  (–11) A = –66 B = –7  3 – 9  (–5) + (–4)  9 – 7 B = –21 + 45 – 36 – 7 B = 24 – 36 – 7 B = –12 – 7 B = –19 C = 6 – [–4  (–3) + 5  (–2)] uploads/Industriel/ multiplication-de-nombres-relatifs-corrige.pdf