fichas calculo 6º

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SECUENCIA FICHAS

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1

2

6 – 2 + 1 = 5

6 - 2 = 4

4 + 1 = 5

3

6 – (2 + 1) = 5

(2+1)= 3

6-3 = 3

4

3X5= 15

2+15 = 17

2 + 3 x 5= 25

5

(3+1)= 42x4 = 8

9-2 x (3+1)= 1

9-8 = 8

6

1475 + 1001 = 2476

1475 + (1000+1) = 2476

7

8

856 + 999 = 1855

856 +(+1000+1) = 1855

9

10

1600 - 1001 = 599

1600 - (1000-1) = 599

11

12

1600 - 999 = 601

1600 - (1000+1) = 601

13

14

60 20 = 3

400 200 = 216000 8000 = 2

15

2/3 de 30 = 20

60 3 = 202 x 30 = 60

16

47 + 28 = 75Aproximo a 50

(sobran 3 y añado decena)

Aproximo a 30 ( sobran 2)

47 + 28 = 75

17

61 + 37 = 98

60 + 30 = 901 + 7 = 8

18

74 - 28 = 46

74 - 30 = 44

44 + 2 = 46

19

74 - 23 = 51

74 - 20 = 54

54 - 3 = 51

20

47 x 2 = 94

40 x 2 = 80

7 x 2 = 1480 + 14 = 94

21

46 x 5 =23046 x 10 =460460 2 = 230

22

18 x 11 = 19818 x 10 = 180

180 + 18 = 198

23

12 x 9 = 10812 x 10 = 120120 - 12 = 108

24

35 x 101 = 353535 x 100 = 3500

3500 + 35 = 3535

25

27 x 99 = 267327 x 100 = 27002700 - 27 = 2673

26

3,8 + 2,1 = 5,9

4 + 2 = 6 (aproximado)

27

5,2 - 2,7 = 2,5

5 + 2 = 3(aproximado)

28

3,89 + 12= 15,89

3 + 12= 15

29

8,59 – 4 = 4,59

8 - 4= 4

30

3,8 x 7 = 26,6

4 x 7 = 28(aproximado)

31

0,3 x 4 = 1,2

3 x 4 = 12

32

10% de 82

82 / 10 = 8,2

33

3% de 9 = 0,27

3 x 9 = 2727 100 = 0,27

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