CHRONO

10 s.

Calculer des expressions comportant des parenthèses.

CHRONO

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