Oefen de erafsommen tot 100

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

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