Oefen de erbijsommen tot 100

Erbijsommen
1.
0
+
25
=
20
30
15
25
2.
45
+
50
=
75
85
90
95
3.
50
+
35
=
85
90
75
80
4.
10
+
55
=
70
65
75
60
5.
20
+
30
=
45
40
60
50
6.
45
+
15
=
60
65
55
50
7.
65
+
5
=
80
65
70
75
8.
15
+
65
=
85
75
80
70
9.
10
+
65
=
75
70
65
85
10.
55
+
5
=
50
65
55
60
11.
5
+
65
=
75
70
60
65
12.
10
+
25
=
35
30
45
40
13.
5
+
65
=
60
75
65
70
14.
30
+
50
=
80
90
85
75
15.
30
+
70
=
100
95
80
85
16.
65
+
10
=
85
80
75
65
17.
65
+
30
=
85
80
75
95
18.
70
+
15
=
95
90
85
80
19.
100
+
0
=
90
85
100
80
20.
5
+
60
=
75
70
65
60
21.
20
+
80
=
80
90
100
85
© JuniorEinstein.nl
Online oefenen  |   Educatieve boeken  |   Werkbladen  |   Educatieve materialen

Oefen de erbijsommen tot 100
| ANTWOORDEN

Erbijsommen
1.
0
+
25
=
20
30
15
25
2.
45
+
50
=
75
85
90
95
3.
50
+
35
=
85
90
75
80
4.
10
+
55
=
70
65
75
60
5.
20
+
30
=
45
40
60
50
6.
45
+
15
=
60
65
55
50
7.
65
+
5
=
80
65
70
75
8.
15
+
65
=
85
75
80
70
9.
10
+
65
=
75
70
65
85
10.
55
+
5
=
50
65
55
60
11.
5
+
65
=
75
70
60
65
12.
10
+
25
=
35
30
45
40
13.
5
+
65
=
60
75
65
70
14.
30
+
50
=
80
90
85
75
15.
30
+
70
=
100
95
80
85
16.
65
+
10
=
85
80
75
65
17.
65
+
30
=
85
80
75
95
18.
70
+
15
=
95
90
85
80
19.
100
+
0
=
90
85
100
80
20.
5
+
60
=
75
70
65
60
21.
20
+
80
=
80
90
100
85
© JuniorEinstein.nl
Online oefenen  |   Educatieve boeken  |   Werkbladen  |   Educatieve materialen