8+8

(a)  

9+2

(a)  

7+8

(a)  

7+2

(a)  

2+9

(a)  

8+7

(a)  

6+6

(a)  

6+5

(a)  

8+9

(a)  

9+7

(a)  

7+6

(a)  

9+5

(a)  

4+9

(a)  

3+9

(a)  

8+3

(a)  

8+6

(a)  

7+3

(a)  

8+9

(a)  

8+2

(a)  

2x7

(a)  

8x8

(a)  

9x2

(a)  

7x8

(a)  

6x8

(a)  

8x7

(a)  

5x6

(a)  

7x6

(a)  

9x8

(a)  

6x9

(a)  

5x8

(a)  

8x4

(a)  

7x4

(a)  

8x2

(a)  

7x7

(a)  

6x9

(a)  

9x6

(a)  

8x6

(a)  

9x8

(a)  

7x9

(a)  

5-2

(a)  

7-1

(a)  

9-4

(a)  

10-6

(a)  

6-2

(a)  

7-2

(a)  

8-3

(a)  

9-6

(a)  

10-4

(a)  

6-2

(a)  

7-2

(a)  

8-3

(a)  

9-5

(a)  

8-6

(a)  

9-3

(a)  

7-5

(a)  

8-1

(a)  

9-6

(a)  

9-3

(a)  

7-4

(a)  

56:8

(a)  

49:7

(a)  

64:8

(a)  

36:9

(a)  

42:7

(a)  

48:6

(a)  

32:4

(a)  

45:5

(a)  

24:6

(a)  

81:9

(a)  

40:8

(a)  

63:9

(a)  

72:8

(a)  

16:4

(a)  

20:4

(a)  

7:8

(a)  

13: 2

(a)  

7:3

(a)  

8:6

(a)  

53:6

(a)  

1.398.471 + 2.699.999

(a)  

3.847.596 + 3.799.999

(a)  

2.318.657 + 6.490.281

(a)  

5.672.832 + 7.328.692

(a)  

7.129.620 + 8.569.396

(a)  

123 x 322

(a)  

413x125

(a)  

265x476

(a)  

765x865

(a)  

632x741

(a)  

3.421.675 – 1.843.219

(a)  

4.810.293 – 2.678.132

(a)  

2.765.982 – 1.286.074

(a)  

4.380.287 – 1.687.292

(a)  

3.867.302 – 1.963.482

(a)  

8.234.658 : 2 

(a)  

6.938.376 : 4

(a)  

8.243.280 : 8 

(a)  

6.357.827 : 7

(a)  

9.256.326 : 6

(a)  

….+6 = 13

(a)  

7+…..= 12

(a)  

….+8 = 16

(a)  

9+…..= 15

(a)  

….+5= 11

(a)  

15-…..= 7

(a)  

18-…..=9

(a)  

13-…..=7

(a)  

14-…..=9

(a)  

12-…..=8

(a)  

20: …..=4

(a)  

….:7 = 3

(a)  

…..: 6 = 6

(a)  

56 : …..=8

(a)  

….: 7 = 4

(a)  

…. X5 = 40

(a)  

8 x …. = 32

(a)  

…. X 7 = 35

(a)  

9 x …..= 27

(a)  

…. X 8 = 72

(a)  

….+9 = 14

(a)  

….- 3 = 9

(a)  

…. : 9 = 4

(a)  

…+ 7 = 19

(a)  

….X 5=35

(a)