Rekensommen met eraf tot 20

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

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