Oefen de erbijsom en erafsom tot 50
In de mix
|
1.
31 – 15 =
2
16
|
2.
46 – 22 =
2
24
|
3.
16 + 18 =
2
34
|
4.
31 + 8 =
2
39
|
|
5.
16 – 15 =
2
1
|
6.
46 + 4 =
50
2
|
7.
48 – 36 =
1
12
|
8.
44 + 2 =
46
2
|
|
9.
6 – 3 =
1
3
|
10.
47 + 0 =
47
2
|
11.
22 – 11 =
11
1
|
12.
12 – 6 =
1
6
|
|
13.
43 – 18 =
2
25
|
14.
28 – 20 =
1
8
|
15.
45 – 42 =
3
1
|
16.
37 – 9 =
28
2
|
|
17.
45 + 1 =
46
2
|
18.
40 – 32 =
8
1
|
19.
22 – 0 =
22
2
|
20.
5 – 2 =
1
3
|