Oefen de erbijsom en erafsom tot 50
In de mix
|
1.
50 + 0 =
2
50
|
2.
10 – 3 =
7
1
|
3.
40 + 10 =
2
50
|
4.
5 + 33 =
2
38
|
|
5.
7 – 1 =
6
1
|
6.
43 + 3 =
2
46
|
7.
39 + 8 =
47
2
|
8.
2 – 0 =
1
2
|
|
9.
44 + 0 =
44
2
|
10.
43 – 7 =
2
36
|
11.
48 + 0 =
48
2
|
12.
26 – 19 =
1
7
|
|
13.
42 – 3 =
2
39
|
14.
33 – 14 =
19
2
|
15.
46 – 3 =
43
2
|
16.
38 + 10 =
48
2
|
|
17.
20 – 2 =
2
18
|
18.
5 – 5 =
0
2
|
19.
12 – 12 =
2
0
|
20.
20 – 7 =
13
1
|