Oefen de erbijsom en erafsom tot 50
In de mix
|
1.
17 + 0 =
2
17
|
2.
16 + 25 =
2
41
|
3.
1 + 16 =
2
17
|
4.
35 + 3 =
2
38
|
|
5.
4 + 3 =
7
1
|
6.
13 – 10 =
1
3
|
7.
17 + 10 =
2
27
|
8.
1 + 48 =
49
2
|
|
9.
43 + 2 =
2
45
|
10.
47 + 3 =
2
50
|
11.
16 + 25 =
2
41
|
12.
16 – 10 =
1
6
|
|
13.
48 – 37 =
1
11
|
14.
21 – 1 =
2
20
|
15.
30 + 12 =
42
2
|
16.
38 + 10 =
2
48
|
|
17.
10 – 0 =
1
10
|
18.
19 + 21 =
40
2
|
19.
17 – 6 =
11
1
|
20.
4 – 2 =
1
2
|