quelqu'un peut m'aider pour les calculs svp
Question
2 Réponse
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1. Réponse loulakar
Bonjour
Compléter avec le nombre qui convient :
5 x ... = 30
... = 30/5
... = (6 x 5)/5
... = 6
5 x 6 = 30
7 x ... = 25
... = 25/7
7 x 25/7 = 25
16/9 x ... = 16
... = 16 x 9/16
... = 16/16 x 9
... = 9
16/9 x 9 = 16
10/11 x ... = 20
... = 20 x 11/10
... = 20/10 x 11
... = (2 x 10)/10 x 11
... = 2 x 11
... = 22
10/11 x 22 = 20
1/4 x ... = 3/4
... = 3/4 x 4
... = 4/4 x 3
... = 3
1/4 x 3 = 3/4
2/5 x ... = 2/5
... = 2/5 x 5/2
... = (2 x 5)/(2 x 5)
... = 1
2/5 x 1 = 2/5
... x 4 = 28
... = 28/4
... = (7 x 4)/4
... = 7
7 x 4 = 28
... x 6 = 21
... = 21/6
... = (3 x 7)/(3 x 2)
... = 7/2
7/2 x 6 = 21
... x 17/8 = 17
... = 17 x 8/17
... = 17/17 x 8
... = 8
8 x 17/8 = 17
... x 8/3 = 24
... = 24 x 3/8
... = (8 x 3 x 3)/8
... = 9
9 x 8/3 = 24
... x 1/3 = 2/3
... = 2/3 x 3
... = 3/3 x 2
... = 2
2 x 1/3 = 2/3
... x 1/3 = 2/6
... = 2/6 x 3
... = (2 x 3)/(2 x 3)
... = 1
1 x 1/3 = 2/6
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2. Réponse dieudonnenguema28
Réponse:
Exercice: Complétons avec le nombre qui convient. 1) 5×6=30. 2) 7×25/7=25. 3) 16/9×9=16. 4) 10/11×22=20 5) 1/4×3=3/4. 6) 2/5×1=2/5. 7) 7×4=28. 8) 7/2×6=21. 9) 8×17/8=17. 10) 9×8/3=24. 11) 2×1/3=2/3. 12) 2/2×1/3=2/6=2÷2/6÷2=1/3(par la simplification si demandée).
Explications étape par étape:
Et voilà merci à la prochaine.