CHRONO

10 s.

Calculer des expressions comportant des parenthèses.

CHRONO

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