Calcul mental: fractions

Calcul mental: fractions
Calcul mental sixi` eme
Lyc´ ee Franc¸ais de Barcelone
sixi` eme
(LFB - sixi` eme) Calcul mental: fractions sixi` eme 1 / 21

Question 1
Quelle est la fraction du rectangle color´ ee en vert ?
(LFB - sixi` eme) Calcul mental: fractions sixi` eme 2 / 21

Question 2
Donner l’´ ecriture d ´ ecimale de 9
4
(LFB - sixi` eme) Calcul mental: fractions sixi` eme 3 / 21

Question 3
Donner le nombre manquant : 3
7=..... 42
(LFB - sixi` eme) Calcul mental: fractions sixi` eme 4 / 21

Question 4
La fraction 17
11 est-elle irr´
eductible ?
(LFB - sixi` eme) Calcul mental: fractions sixi` eme 5 / 21