Oefen de erbijsommen tot 100

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

Oefen de erbijsommen tot 100
| ANTWOORDEN

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