Oefen de erbijsom en erafsom tot 50
In de mix
|
1.
37 – 37 =
0
2
|
2.
31 – 17 =
1
14
|
3.
48 + 2 =
50
2
|
4.
26 + 19 =
45
2
|
|
5.
38 + 1 =
39
2
|
6.
9 + 22 =
2
31
|
7.
33 + 15 =
48
2
|
8.
14 – 6 =
8
1
|
|
9.
16 + 31 =
2
47
|
10.
30 – 19 =
11
1
|
11.
25 – 21 =
4
1
|
12.
34 + 8 =
42
2
|
|
13.
8 + 11 =
19
2
|
14.
37 – 17 =
2
20
|
15.
15 + 4 =
19
2
|
16.
25 – 1 =
2
24
|
|
17.
24 + 21 =
45
2
|
18.
49 – 20 =
2
29
|
19.
7 – 5 =
1
2
|
20.
18 – 4 =
1
14
|