Rekensommen met eraf tot 20

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

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