CHRONO

10 s.

Calculer des expressions comportant des parenthèses.

CHRONO

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