Oefen de erbijsommen tot 100

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

Oefen de erbijsommen tot 100
| ANTWOORDEN

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