Oefen de erbijsom en erafsom tot 50
In de mix
|
1.
25 + 15 =
40
2
|
2.
28 + 18 =
2
46
|
3.
38 – 14 =
24
2
|
4.
26 – 12 =
14
1
|
|
5.
44 – 35 =
9
1
|
6.
47 + 1 =
48
2
|
7.
24 + 20 =
2
44
|
8.
8 + 9 =
2
17
|
|
9.
42 + 7 =
49
2
|
10.
34 + 16 =
50
2
|
11.
27 – 17 =
10
1
|
12.
29 + 5 =
2
34
|
|
13.
23 – 2 =
21
2
|
14.
32 – 17 =
15
1
|
15.
22 + 25 =
2
47
|
16.
20 – 14 =
1
6
|
|
17.
39 – 7 =
32
2
|
18.
39 – 21 =
18
2
|
19.
49 – 39 =
1
10
|
20.
9 – 9 =
0
2
|