Oefen de erbijsom en erafsom tot 50
In de mix
|
1.
22 + 26 =
2
48
|
2.
28 + 9 =
37
2
|
3.
42 + 4 =
2
46
|
4.
8 + 32 =
40
2
|
|
5.
1 – 1 =
2
0
|
6.
8 + 5 =
13
1
|
7.
20 – 7 =
1
13
|
8.
23 + 6 =
2
29
|
|
9.
3 – 2 =
2
1
|
10.
28 – 5 =
23
2
|
11.
42 – 27 =
1
15
|
12.
11 – 6 =
5
1
|
|
13.
48 + 0 =
48
2
|
14.
2 – 0 =
2
1
|
15.
15 + 21 =
36
2
|
16.
48 + 2 =
50
2
|
|
17.
40 + 7 =
47
2
|
18.
3 + 30 =
2
33
|
19.
42 – 40 =
1
2
|
20.
29 – 4 =
2
25
|