2º ESO - Matemáticas - SM - 3 = FRACCIONES y DECIMALES - 7 = Operaciones combinadas con fracciones

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32. a) =+−=+−=×+×−=+×− −

60

12465

5

1

15

1

12

13

3

1

5

3

5

4

12

1

12

133:

10

6

5

412

12

13 1 60

73

b) =−+=−+=××−×+=×−×+45

189290

5

21

45

22

2

7

1

3

5

2

9

8

5

42

2

7

3

1:

5

2

9

8

25

162

45

97

c) =−=−=××××−×=×−

4

2021

1

5

4

21

183

654

1

3

4

7

6

1:

8

5

3

4

9

1:

4

7

4

1

d) ( ) =+×

+−=+×+−=++−=+×+×−−

− 132

1

18

5

9

81

3

2

2

1

18

5

9

81

3

2

18

5

9

81

3

22

2

5

9

1

9

856

532

=×=×

××==++−=525

2

2

115

32

1153

288

495

288

288332256

32

55

e) =−+=−+=××

××−+=

××−+−

36

15484

12

5

3

4

9

1

465

2512

2

3:2

9

1

2

5

6

1

5

2

4

9:23

22

36

37

f) =−−+=−−+=−

−×+−

72

516284100

72

5

4

9

6

7

3

5

5

9:

8

1

3

2

2

7

3

1

3

52

72

17

33 a) =+−=+−=×+−=

−×+

+−40

12645120

20

63

8

93

5

9

4

7

8

93

5

12

4

71

8

13

40

201

b) =+−+=

−×−+=

×−×−×+15

1

5

2

12

35

9

4

15

2

5

4

2

1

12

35

9

4

5

2

3

1

5

4

2

1

3

7

4

5

9

4

==+−+=180

545

180

127252580

36

109

c) =−+=×−×+

=−

−×+

−−

32

9

56

21

64

1

16

9

2

1

14

7

4

3

8

1

9

16:

2

1

7

102

4

31

8

9212

==−+=448

49

448

1261687

64

7

d) =

×−×−=

−×−×−=

−×−×−5

3

4

71

5

2

5

18

5

1

5

4

4

71

5

2

5

18

5

1

10

8

4

71

5

2

5

18

=−=−=××−=−×−=

50

1180

50

1

5

18

205

12

5

18

20

2120

5

2

5

18

50

179

e) =+−=+×−=+−×−=+

−×− 275

4

5

182

15

1

5

4

5

182

30

35

5

4

5

182

10

1

6

1

5

4

5

18

=+−=75

1504270

75

416

f) =

+×××−=

+×+×−=

+×

+×−6

5

418

32335

6

5

4

3

18

91435

6

5

4

3

2

1

9

735

=−=−=+×−=

+×−=8

4340

8

435

24

202335

6

5

24

2335

8

3−