Oefen de erbijsommen tot 100

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

Oefen de erbijsommen tot 100
| ANTWOORDEN

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