CHRONO

2 s.

Calculer des expressions comportant des parenthèses.

CHRONO

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