Oefen de erbijsom en erafsom tot 50
In de mix
|
1.
15 + 10 =
25
2
|
2.
31 – 4 =
2
27
|
3.
5 – 5 =
0
2
|
4.
42 + 6 =
48
2
|
|
5.
4 – 4 =
2
0
|
6.
25 – 21 =
1
4
|
7.
49 + 0 =
49
2
|
8.
36 + 4 =
40
2
|
|
9.
10 – 10 =
2
0
|
10.
10 – 1 =
1
9
|
11.
47 + 3 =
2
50
|
12.
15 – 4 =
11
1
|
|
13.
10 + 39 =
2
49
|
14.
32 – 13 =
19
2
|
15.
20 + 25 =
45
2
|
16.
39 – 32 =
7
1
|
|
17.
21 + 1 =
2
22
|
18.
42 – 29 =
1
13
|
19.
11 – 9 =
2
1
|
20.
19 + 3 =
22
2
|