CHRONO

10 s.

Calculer des expressions comportant des parenthèses.

CHRONO

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