Oefen de erbijsom en erafsom tot 50
In de mix
|
1.
30 – 11 =
19
2
|
2.
32 + 11 =
2
43
|
3.
32 + 4 =
36
2
|
4.
44 + 6 =
50
2
|
|
5.
29 – 4 =
2
25
|
6.
3 + 39 =
42
2
|
7.
45 – 36 =
9
1
|
8.
12 + 37 =
49
2
|
|
9.
20 – 3 =
17
2
|
10.
9 + 19 =
28
2
|
11.
14 – 2 =
12
1
|
12.
27 – 2 =
2
25
|
|
13.
5 + 12 =
17
2
|
14.
14 – 3 =
1
11
|
15.
44 + 1 =
45
2
|
16.
33 + 7 =
40
2
|
|
17.
46 – 31 =
15
1
|
18.
19 + 7 =
26
2
|
19.
18 + 13 =
31
2
|
20.
15 – 1 =
14
1
|