Oefen de erbijsom en erafsom tot 50
In de mix
|
1.
39 + 6 =
2
45
|
2.
14 – 2 =
1
12
|
3.
16 – 8 =
1
8
|
4.
23 – 1 =
22
2
|
|
5.
30 + 1 =
2
31
|
6.
31 – 28 =
3
1
|
7.
30 – 5 =
2
25
|
8.
37 – 23 =
1
14
|
|
9.
5 + 5 =
1
10
|
10.
38 – 21 =
2
17
|
11.
38 + 1 =
39
2
|
12.
42 – 33 =
1
9
|
|
13.
21 – 1 =
2
20
|
14.
45 – 33 =
12
1
|
15.
18 + 0 =
18
2
|
16.
23 + 15 =
2
38
|
|
17.
40 + 5 =
2
45
|
18.
6 – 5 =
2
1
|
19.
28 – 12 =
16
2
|
20.
23 – 17 =
1
6
|