Oefen de erbijsom en erafsom tot 50
In de mix
|
1.
29 + 4 =
33
2
|
2.
20 + 2 =
22
2
|
3.
29 + 4 =
2
33
|
4.
13 – 4 =
9
1
|
|
5.
5 – 3 =
2
1
|
6.
15 + 12 =
27
2
|
7.
9 + 36 =
45
2
|
8.
24 – 2 =
2
22
|
|
9.
24 – 16 =
1
8
|
10.
44 – 40 =
4
1
|
11.
28 – 21 =
7
1
|
12.
2 + 1 =
3
1
|
|
13.
13 – 13 =
0
2
|
14.
10 + 1 =
1
11
|
15.
41 – 15 =
26
2
|
16.
22 + 20 =
2
42
|
|
17.
1 + 27 =
2
28
|
18.
44 + 3 =
2
47
|
19.
41 + 4 =
2
45
|
20.
37 + 7 =
2
44
|