Oefen de erbijsommen tot 50

Erbijsommen

1.

20

+

0

=

20

25

10

15

2.

10

+

35

=

45

40

35

25

3.

25

+

25

=

40

50

30

35

4.

5

+

25

=

30

40

25

20

5.

35

+

5

=

20

35

25

40

6.

15

+

35

=

45

50

40

35

7.

30

+

0

=

40

25

30

20

8.

5

+

30

=

40

35

45

30

9.

30

+

5

=

40

35

45

25

10.

5

+

45

=

50

30

45

40

11.

30

+

0

=

40

25

30

35

12.

0

+

45

=

35

30

45

40

13.

20

+

25

=

35

40

25

45

14.

0

+

30

=

20

30

25

40

15.

10

+

35

=

25

30

45

35

16.

15

+

35

=

50

40

30

35

17.

45

+

0

=

35

30

40

45

18.

30

+

15

=

25

45

35

30

19.

20

+

25

=

35

30

40

45

20.

40

+

10

=

40

30

35

50

21.

30

+

15

=

25

30

45

40

Oefen de erbijsommen tot 50
| ANTWOORDEN

Erbijsommen

1.

20

+

0

=

20

25

10

15

2.

10

+

35

=

45

40

35

25

3.

25

+

25

=

40

50

30

35

4.

5

+

25

=

30

40

25

20

5.

35

+

5

=

20

35

25

40

6.

15

+

35

=

45

50

40

35

7.

30

+

0

=

40

25

30

20

8.

5

+

30

=

40

35

45

30

9.

30

+

5

=

40

35

45

25

10.

5

+

45

=

50

30

45

40

11.

30

+

0

=

40

25

30

35

12.

0

+

45

=

35

30

45

40

13.

20

+

25

=

35

40

25

45

14.

0

+

30

=

20

30

25

40

15.

10

+

35

=

25

30

45

35

16.

15

+

35

=

50

40

30

35

17.

45

+

0

=

35

30

40

45

18.

30

+

15

=

25

45

35

30

19.

20

+

25

=

35

30

40

45

20.

40

+

10

=

40

30

35

50

21.

30

+

15

=

25

30

45

40