Oefen de erbijsom en erafsom tot 50
In de mix
|
1.
32 + 13 =
2
45
|
2.
18 – 2 =
16
2
|
3.
1 + 7 =
1
8
|
4.
34 + 4 =
2
38
|
|
5.
4 – 1 =
3
1
|
6.
17 + 26 =
43
2
|
7.
17 + 32 =
2
49
|
8.
18 + 17 =
2
35
|
|
9.
35 – 35 =
2
0
|
10.
48 + 0 =
2
48
|
11.
6 – 3 =
1
3
|
12.
39 – 20 =
2
19
|
|
13.
20 – 14 =
6
1
|
14.
25 + 5 =
2
30
|
15.
15 + 1 =
2
16
|
16.
1 – 1 =
2
0
|
|
17.
26 – 23 =
3
1
|
18.
12 – 4 =
8
1
|
19.
22 + 1 =
2
23
|
20.
13 + 0 =
13
1
|