Rekensommen met eraf tot 20

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

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