Rekensommen met eraf tot 20

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

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