CHRONO

10 s.

Calculer des expressions comportant des parenthèses.

CHRONO

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