Game Preview

Soma e subtração mental

Portuguese 20 Public

mental

Study Slideshow

10+3+5

18

15

5+7

12

15

10+10+10

30

15

20+10

30

15

29+11

40

15

33+17

50

15

33-10

23

15

45-15

30

15

39-17

22

15

40-10

30

15

29-9

20

15

19-7

12

15

90-40

50

15

2x2

4

15

2x8

16

15

4x4

16

15

1
2
›