Oefen de erbijsom en erafsom tot 50
In de mix
|
1.
19 + 16 =
2
35
|
2.
20 – 11 =
1
9
|
3.
25 + 17 =
2
42
|
4.
2 + 8 =
10
1
|
|
5.
7 + 41 =
2
48
|
6.
33 – 1 =
32
2
|
7.
24 – 14 =
10
1
|
8.
9 + 11 =
2
20
|
|
9.
9 + 21 =
30
2
|
10.
31 – 25 =
1
6
|
11.
21 – 11 =
1
10
|
12.
11 + 31 =
42
2
|
|
13.
1 + 21 =
22
2
|
14.
44 – 4 =
40
2
|
15.
13 – 6 =
1
7
|
16.
42 + 5 =
2
47
|
|
17.
2 + 5 =
7
1
|
18.
30 – 19 =
1
11
|
19.
45 – 33 =
12
1
|
20.
49 – 20 =
2
29
|