Oefen de erbijsom en erafsom tot 50
In de mix
|
1.
5 + 19 =
2
24
|
2.
27 + 7 =
34
2
|
3.
40 + 8 =
2
48
|
4.
21 + 8 =
2
29
|
|
5.
8 – 0 =
8
1
|
6.
40 – 6 =
34
2
|
7.
2 – 0 =
2
1
|
8.
42 + 8 =
2
50
|
|
9.
17 – 10 =
1
7
|
10.
42 + 3 =
45
2
|
11.
35 + 9 =
2
44
|
12.
33 + 12 =
2
45
|
|
13.
39 – 8 =
2
31
|
14.
17 – 12 =
1
5
|
15.
40 + 5 =
45
2
|
16.
3 – 3 =
2
0
|
|
17.
33 + 0 =
33
2
|
18.
30 – 4 =
2
26
|
19.
13 + 25 =
2
38
|
20.
15 + 4 =
2
19
|