Oefen de erbijsom en erafsom tot 50
In de mix
|
1.
29 – 25 =
1
4
|
2.
3 + 3 =
6
1
|
3.
39 – 34 =
1
5
|
4.
11 + 35 =
46
2
|
|
5.
5 – 2 =
1
3
|
6.
16 – 7 =
1
9
|
7.
47 – 40 =
1
7
|
8.
45 + 0 =
45
2
|
|
9.
48 – 27 =
21
2
|
10.
7 + 11 =
2
18
|
11.
18 + 17 =
2
35
|
12.
42 – 4 =
2
38
|
|
13.
48 + 0 =
48
2
|
14.
3 + 11 =
1
14
|
15.
36 + 4 =
2
40
|
16.
13 + 25 =
38
2
|
|
17.
3 – 2 =
2
1
|
18.
50 + 0 =
50
2
|
19.
47 – 27 =
2
20
|
20.
16 + 29 =
2
45
|