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CALCULO MENTAL

Spanish 15 Public

RESOLUCION DE PROBLEMAS EN TIEMPO DETERMINADO

Study Slideshow

4 x 5 + 7=

27

15

13 x 2 - 9 =

17

15

6 x 6 + 11 =

47

15

9 x 3 + 13

40

15

14 + 9 - 7

16

15

32 + 14 - 36=

10

15

64 - 9 + 12 =

67

15

80 - 17 + 9 =

72

15

36 + 15 - 21 =

30

15

3 x 8 / 2=

12

15

5 x 8 / 10

4

15

7 x 6 / 2

21

15

2 x 9 / 3

6

15

7 x 4 / 7

4

15

5 x 9 + 15

60

15