Oefen de erbijsommen tot 100

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

Oefen de erbijsommen tot 100
| ANTWOORDEN

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