Oefen de erafsommen tot 100

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

Oefen de erafsommen tot 100
| ANTWOORDEN

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