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التعامل مع الكسور ذهنياً

(4-5)

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  • جمع الكسور وطرحها وضربها وقسمتها وتفسير عملية القسمة بأنها عكس عملية الضرب مع أخذ العوامل المشتركة قبل الضرب أو القسمة.

أهداف الدرس

3 of 7

2

6

=

+

1

6

=

3

6

=

1

2

6

8

=

+

1

8

=

7

8

6

10

=

+

1

10

=

7

10

3

9

=

-

1

9

=

2

9

2

8

=

-

1

8

=

1

8

3

15

=

-

1

15

=

2

15

4

6

=

-

1

6

=

3

6

=

1

2

8

10

=

-

1

10

=

7

10

11

20

=

-

8

20

=

3

20

3

6

=

-

2

6

=

1

6

16

20

=

-

5

20

=

11

20

10

14

=

-

7

14

=

3

14

4

8

=

+

3

8

=

7

8

9

12

=

+

5

12

=

14

12

=

1

6

1

7

15

=

+

12

15

=

19

15

=

5

15

=

+

3

15

=

8

15

7

28

=

+

4

28

=

11

28

10

45

=

+

9

45

=

19

45

4

15

1

4 of 7

=

1

15

=

2

21

=

9

20

=

16

63

=

8

45

=

24

65

=

2

12

=

1

6

=

3

45

=

1

15

=

40

55

=

8

11

1

6

=

×

3

1

=

3

6

=

1

2

1

12

=

×

4

1

=

4

12

=

1

3

2

7

=

×

5

2

=

10

14

=

5

7

3

8

=

×

5

3

=

15

24

=

5

8

4

5

=

×

9

4

=

36

20

=

9

5

7

8

=

×

12

7

=

84

56

=

3

2

2

3

=

×

5

4

=

10

12

=

5

6

6

7

=

×

5

3

=

30

21

=

10

7

3

4

=

×

7

6

=

21

24

=

7

8

=

4

5

1

5 of 7

1

3

=

+

1

4

مجموع اللاعبين

+

=

فريق

=

1

س

1

3

+

1

4

+

=

1

س

7

12

+

=

1

س

-

=

1

س

7

12

=

5

12

=

علبة

=

1

2

5

=

+

1

6

مجموع النكهات

+

ص

2

5

+

1

6

+

=

1

ص

17

30

+

=

1

ص

-

=

1

ص

17

30

=

13

30

6 of 7

3

4

=

×

3

5

=

9

20

1

4

=

×

3

5

=

3

20

5

9

=

×

3

5

=

1

3

5

9

=

×

2

5

=

2

9

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شكراً على المتابعة

كان معكم / أحمد الصباري