Oefen de erbijsommen tot 100

Erbijsommen
1.
30
+
45
=
2.
20
+
60
=
3.
10
+
20
=
4.
5
+
35
=
5.
20
+
55
=
6.
20
+
65
=
7.
5
+
55
=
8.
40
+
55
=
9.
15
+
50
=
10.
25
+
55
=
11.
25
+
70
=
12.
5
+
20
=
13.
20
+
60
=
14.
30
+
70
=
15.
15
+
85
=
16.
25
+
60
=
17.
20
+
25
=
18.
5
+
5
=
19.
0
+
100
=
20.
0
+
25
=
21.
20
+
70
=
22.
45
+
55
=
23.
0
+
25
=
24.
25
+
65
=
25.
0
+
100
=
26.
25
+
40
=
27.
25
+
75
=
28.
25
+
55
=
29.
25
+
55
=
30.
5
+
95
=
31.
30
+
35
=
32.
20
+
50
=
33.
30
+
70
=
34.
10
+
20
=
35.
20
+
80
=
36.
10
+
15
=
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Oefen de erbijsommen tot 100
| ANTWOORDEN

Erbijsommen
1.
30
+
45
=
75
2.
20
+
60
=
80
3.
10
+
20
=
30
4.
5
+
35
=
40
5.
20
+
55
=
75
6.
20
+
65
=
85
7.
5
+
55
=
60
8.
40
+
55
=
95
9.
15
+
50
=
65
10.
25
+
55
=
80
11.
25
+
70
=
95
12.
5
+
20
=
25
13.
20
+
60
=
80
14.
30
+
70
=
100
15.
15
+
85
=
100
16.
25
+
60
=
85
17.
20
+
25
=
45
18.
5
+
5
=
10
19.
0
+
100
=
100
20.
0
+
25
=
25
21.
20
+
70
=
90
22.
45
+
55
=
100
23.
0
+
25
=
25
24.
25
+
65
=
90
25.
0
+
100
=
100
26.
25
+
40
=
65
27.
25
+
75
=
100
28.
25
+
55
=
80
29.
25
+
55
=
80
30.
5
+
95
=
100
31.
30
+
35
=
65
32.
20
+
50
=
70
33.
30
+
70
=
100
34.
10
+
20
=
30
35.
20
+
80
=
100
36.
10
+
15
=
25
© JuniorEinstein.nl
Online oefenen  |   Educatieve boeken  |   Werkbladen  |   Educatieve materialen