Rekensommen met eraf tot 20

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

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