CHRONO

10 s.

Calculer des expressions comportant des parenthèses.

CHRONO

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