Rekensommen met eraf tot 20

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

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