calculer a la main chaque exercice A=13,4-2×0,7+49:7 B=42:7-5 C=100-99:11+9

Question

Mathématiques Publié : 2014-09-20 Mis à jour : 2024-01-16 lukaspetitjean

Question

calculer a la main chaque exercice

A=13,4-2×0,7+49:7
B=42:7-5
C=100-99:11+9

Answer 1

Salut!

A=13,4-2×0,7+49:7
=13,4-1,4+49:7
=12+7
=19

B=42:7-5
=6-5
=1

C=100-99:11+9
=100-9+9
=91+9
=100

Voilà