Rekensommen met eraf tot 20

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

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