Rekensommen met eraf tot 20

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

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