Oefen de erbijsommen tot 100

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

Oefen de erbijsommen tot 100
| ANTWOORDEN

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