Oefen de erafsommen tot 100

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

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