Oefen de erafsommen tot 50

Erafsommen

1.

10

-

0

=

15

10

20

5

2.

30

-

0

=

35

40

25

30

3.

35

-

5

=

35

25

20

30

4.

50

-

0

=

40

35

50

30

5.

40

-

30

=

15

10

20

0

6.

45

-

30

=

5

25

10

15

7.

30

-

30

=

15

10

0

5

8.

45

-

10

=

35

25

45

40

9.

40

-

30

=

20

0

10

15

10.

35

-

5

=

35

25

40

30

11.

45

-

5

=

30

25

40

35

12.

15

-

0

=

15

5

25

10

13.

30

-

15

=

15

5

20

25

14.

30

-

10

=

20

10

25

15

15.

50

-

10

=

35

40

20

25

16.

40

-

10

=

30

40

25

35

17.

50

-

30

=

30

25

15

20

18.

15

-

0

=

5

15

25

10

19.

15

-

15

=

10

0

5

20

20.

35

-

5

=

40

30

35

25

21.

25

-

25

=

20

0

10

15

Oefen de erafsommen tot 50
| ANTWOORDEN

Erafsommen

1.

10

-

0

=

15

10

20

5

2.

30

-

0

=

35

40

25

30

3.

35

-

5

=

35

25

20

30

4.

50

-

0

=

40

35

50

30

5.

40

-

30

=

15

10

20

0

6.

45

-

30

=

5

25

10

15

7.

30

-

30

=

15

10

0

5

8.

45

-

10

=

35

25

45

40

9.

40

-

30

=

20

0

10

15

10.

35

-

5

=

35

25

40

30

11.

45

-

5

=

30

25

40

35

12.

15

-

0

=

15

5

25

10

13.

30

-

15

=

15

5

20

25

14.

30

-

10

=

20

10

25

15

15.

50

-

10

=

35

40

20

25

16.

40

-

10

=

30

40

25

35

17.

50

-

30

=

30

25

15

20

18.

15

-

0

=

5

15

25

10

19.

15

-

15

=

10

0

5

20

20.

35

-

5

=

40

30

35

25

21.

25

-

25

=

20

0

10

15