Oefen de erbijsom en erafsom tot 50
In de mix
|
1.
45 – 37 =
8
1
|
2.
36 + 3 =
2
39
|
3.
9 – 8 =
2
1
|
4.
26 – 17 =
9
1
|
|
5.
37 – 18 =
19
2
|
6.
21 + 25 =
46
2
|
7.
35 – 6 =
29
2
|
8.
32 – 30 =
1
2
|
|
9.
47 + 2 =
49
2
|
10.
29 + 4 =
2
33
|
11.
38 + 6 =
2
44
|
12.
38 – 31 =
7
1
|
|
13.
19 + 17 =
36
2
|
14.
7 – 7 =
2
0
|
15.
47 + 3 =
2
50
|
16.
16 + 7 =
2
23
|
|
17.
11 + 5 =
16
2
|
18.
31 + 6 =
2
37
|
19.
17 + 16 =
33
2
|
20.
39 + 8 =
47
2
|