Rekensommen met eraf tot 50
Erafsommen
1.
30
–
20
=
2.
40
–
0
=
3.
30
–
30
=
4.
50
–
5
=
5.
40
–
0
=
6.
5
–
0
=
7.
45
–
0
=
8.
15
–
5
=
9.
15
–
15
=
10.
10
–
5
=
11.
45
–
20
=
12.
35
–
10
=
13.
30
–
5
=
14.
20
–
15
=
15.
20
–
5
=
16.
30
–
20
=
17.
45
–
30
=
18.
45
–
5
=
19.
40
–
20
=
20.
35
–
20
=
21.
35
–
15
=
22.
5
–
0
=
23.
35
–
5
=
24.
35
–
30
=
25.
30
–
0
=
26.
5
–
5
=
27.
25
–
25
=
28.
40
–
35
=
29.
30
–
20
=
30.
10
–
0
=
31.
25
–
10
=
32.
25
–
20
=
33.
30
–
10
=
34.
45
–
15
=
35.
30
–
0
=
36.
50
–
35
=
Rekensommen met eraf tot 50
| ANTWOORDEN
Erafsommen
1.
30
–
20
=
10
2.
40
–
0
=
40
3.
30
–
30
=
0
4.
50
–
5
=
45
5.
40
–
0
=
40
6.
5
–
0
=
5
7.
45
–
0
=
45
8.
15
–
5
=
10
9.
15
–
15
=
0
10.
10
–
5
=
5
11.
45
–
20
=
25
12.
35
–
10
=
25
13.
30
–
5
=
25
14.
20
–
15
=
5
15.
20
–
5
=
15
16.
30
–
20
=
10
17.
45
–
30
=
15
18.
45
–
5
=
40
19.
40
–
20
=
20
20.
35
–
20
=
15
21.
35
–
15
=
20
22.
5
–
0
=
5
23.
35
–
5
=
30
24.
35
–
30
=
5
25.
30
–
0
=
30
26.
5
–
5
=
0
27.
25
–
25
=
0
28.
40
–
35
=
5
29.
30
–
20
=
10
30.
10
–
0
=
10
31.
25
–
10
=
15
32.
25
–
20
=
5
33.
30
–
10
=
20
34.
45
–
15
=
30
35.
30
–
0
=
30
36.
50
–
35
=
15