Càlcul mental

16 + 4 =
18 + 2 =
18 - = 16
12 + 6 =
+ 4 = 18
14 - 6 =
+ 6 = 20
14 - 4 =
12 + = 15
+ 7 = 23
12 - = 8
18 + 5 =
- 4 = 12
12 + = 21
+ 9 = 24
16 - 4 =
12 - = 6
+ 6 = 18
14 - = 10
18 + 3 =
12 - = 8
16 - 4 =
- 2 = 16
16 + = 18
12 - 6 =
+ 8 = 22
14 - 6 =
- 4 = 12
18 - = 16
14 + 1 =
+ 5 = 21
17 + 2 =
- 6 = 11
12 + 6 =
13 + = 20
- 6 = 5
12 + = 21
+ 2 = 20
13 - 6 =
14 + = 18
11 + 7 =
- 4 = 13
19 - = 17
+ 2 = 16
15 + 4 =
- 2 = 13
14 + = 20
- 4 = 15
17 - 6 =
+ 4 = 23
11 - = 7
- 4 = 11
15 + 7 =
- 2 = 15
13 - 4 =
12 + = 20
- 6 = 9
17 + 8 =
19 - 4 =
17 - = 13

2 x 8 =
5 x 7 =
16 : 2 =
4 x 5 =
7 x 8 =
18 : 3 =
3 x 9 =
12 : 4 =
8 x 4 =
9 x 5 =
24 : 6 =
6 x 3 =
3 x 8 =
28 : 4 =
4 x 3 =
54 : 9 =
40 : 4 =
4 x 9 =
36 : 9 =
14 : 2 =
8 x 6 =
12 : 2 =
32 : 4 =
6 x 5 =
64 : 8 =
28 : 4 =
8 x 5 =
36 : 6 =
28 : 7 =
9 x 4 =
15 : 5 =
24 : 2 =
2 x 4 =
12 : 6 =
4 x 4 =
25 : 5 =
72 : 9 =
2 x 3 =
80 : 8 =
56 : 7 =
3 x 7 =
36 : 6 =
3 x 3 =
18 : 3 =
60 : 6 =
7 x 8 =
63 : 9 =
5 x 4 =
8 x 7 =
60 : 6 =
6 x 7 =
5 x 3 =
36 : 9 =
3 x 7 =
5 x 2 =
32 : 8 =
3 x 4 =
9 x 7 =
56 : 8 =
6 x 8 =