Oefen de erbijsommen tot 100

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

Oefen de erbijsommen tot 100
| ANTWOORDEN

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