CHRONO

10 s.

Calculer des expressions comportant des parenthèses.

CHRONO

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