CHRONO

10 s.

Calculer des expressions comportant des parenthèses.

CHRONO

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