Rekensommen met eraf tot 20

Erafsommen
1.
11
–
9
=
2.
1
–
0
=
3.
7
–
2
=
4.
2
–
0
=
5.
18
–
18
=
6.
12
–
10
=
7.
17
–
14
=
8.
5
–
0
=
9.
7
–
4
=
10.
8
–
0
=
11.
8
–
0
=
12.
4
–
1
=
13.
2
–
0
=
14.
8
–
3
=
15.
9
–
2
=
16.
8
–
7
=
17.
10
–
8
=
18.
1
–
1
=
19.
18
–
0
=
20.
2
–
2
=
21.
17
–
9
=
22.
6
–
0
=
23.
10
–
0
=
24.
7
–
6
=
25.
4
–
3
=
26.
15
–
6
=
27.
16
–
7
=
28.
8
–
8
=
29.
12
–
11
=
30.
2
–
1
=
31.
12
–
9
=
32.
6
–
3
=
33.
12
–
6
=
34.
3
–
2
=
35.
12
–
11
=
36.
4
–
3
=
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Rekensommen met eraf tot 20
| ANTWOORDEN

Erafsommen
1.
11
–
9
=
2
2.
1
–
0
=
1
3.
7
–
2
=
5
4.
2
–
0
=
2
5.
18
–
18
=
0
6.
12
–
10
=
2
7.
17
–
14
=
3
8.
5
–
0
=
5
9.
7
–
4
=
3
10.
8
–
0
=
8
11.
8
–
0
=
8
12.
4
–
1
=
3
13.
2
–
0
=
2
14.
8
–
3
=
5
15.
9
–
2
=
7
16.
8
–
7
=
1
17.
10
–
8
=
2
18.
1
–
1
=
0
19.
18
–
0
=
18
20.
2
–
2
=
0
21.
17
–
9
=
8
22.
6
–
0
=
6
23.
10
–
0
=
10
24.
7
–
6
=
1
25.
4
–
3
=
1
26.
15
–
6
=
9
27.
16
–
7
=
9
28.
8
–
8
=
0
29.
12
–
11
=
1
30.
2
–
1
=
1
31.
12
–
9
=
3
32.
6
–
3
=
3
33.
12
–
6
=
6
34.
3
–
2
=
1
35.
12
–
11
=
1
36.
4
–
3
=
1
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Online oefenen  |   Educatieve boeken  |   Werkbladen  |   Educatieve materialen