Rekensommen met eraf tot 20

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

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