CHRONO

10 s.

Calculer des expressions comportant des parenthèses.

CHRONO

0 s.
(3 + 5) x 4 =
(6 + 2) - 3 =
2 x (2 + 2) =
(9 x 8) - 8 =
(7 x 6) - 5 =
(6 x 5) + 7 =
(4 x 5) - 9 =
(2 + 8) - 6 =
(9 - 8) x 2 =
5 + (8 x 5) =
(7 x 3) - 3 =
7 + (7 x 9) =
(4 x 6) + 9 =
(5 x 7) - 9 =
(7 x 9) + 8 =
(4 x 2) - 2 =
7 x (9 - 5) =
(2 + 5) - 6 =
(1 + 7) x 2 =
(4 + 5) x 3 =