Rekensommen met eraf tot 100

Erafsommen
1.
20
–
15
=
2.
85
–
5
=
3.
80
–
35
=
4.
35
–
15
=
5.
60
–
35
=
6.
80
–
0
=
7.
60
–
45
=
8.
80
–
70
=
9.
85
–
50
=
10.
90
–
80
=
11.
75
–
60
=
12.
5
–
0
=
13.
70
–
45
=
14.
55
–
50
=
15.
95
–
25
=
16.
40
–
10
=
17.
70
–
55
=
18.
50
–
15
=
19.
85
–
85
=
20.
60
–
55
=
21.
70
–
60
=
22.
50
–
35
=
23.
60
–
40
=
24.
100
–
15
=
25.
90
–
85
=
26.
30
–
25
=
27.
75
–
75
=
28.
35
–
15
=
29.
25
–
0
=
30.
65
–
50
=
31.
40
–
10
=
32.
30
–
10
=
33.
70
–
40
=
34.
70
–
25
=
35.
35
–
30
=
36.
75
–
15
=
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Rekensommen met eraf tot 100
| ANTWOORDEN

Erafsommen
1.
20
–
15
=
5
2.
85
–
5
=
80
3.
80
–
35
=
45
4.
35
–
15
=
20
5.
60
–
35
=
25
6.
80
–
0
=
80
7.
60
–
45
=
15
8.
80
–
70
=
10
9.
85
–
50
=
35
10.
90
–
80
=
10
11.
75
–
60
=
15
12.
5
–
0
=
5
13.
70
–
45
=
25
14.
55
–
50
=
5
15.
95
–
25
=
70
16.
40
–
10
=
30
17.
70
–
55
=
15
18.
50
–
15
=
35
19.
85
–
85
=
0
20.
60
–
55
=
5
21.
70
–
60
=
10
22.
50
–
35
=
15
23.
60
–
40
=
20
24.
100
–
15
=
85
25.
90
–
85
=
5
26.
30
–
25
=
5
27.
75
–
75
=
0
28.
35
–
15
=
20
29.
25
–
0
=
25
30.
65
–
50
=
15
31.
40
–
10
=
30
32.
30
–
10
=
20
33.
70
–
40
=
30
34.
70
–
25
=
45
35.
35
–
30
=
5
36.
75
–
15
=
60
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Online oefenen  |   Educatieve boeken  |   Werkbladen  |   Educatieve materialen