CHRONO

10 s.

Calculer des expressions comportant des parenthèses.

CHRONO

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