Rekensommen met eraf tot 20

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

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