Oefen de erbijsommen tot 100

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

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