Oefen de erbijsom en erafsom tot 50
In de mix
|
1.
35 – 18 =
17
2
|
2.
3 – 3 =
0
2
|
3.
49 + 1 =
50
2
|
4.
3 – 3 =
0
2
|
|
5.
31 – 17 =
14
1
|
6.
43 + 5 =
2
48
|
7.
26 + 2 =
28
2
|
8.
47 + 2 =
2
49
|
|
9.
22 – 11 =
1
11
|
10.
50 + 0 =
50
2
|
11.
10 – 10 =
2
0
|
12.
12 + 10 =
22
2
|
|
13.
22 – 13 =
9
1
|
14.
18 – 13 =
1
5
|
15.
40 + 5 =
45
2
|
16.
19 + 24 =
2
43
|
|
17.
32 – 31 =
2
1
|
18.
40 + 6 =
46
2
|
19.
21 – 10 =
1
11
|
20.
27 + 9 =
2
36
|