Rekensommen met eraf tot 20

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

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