Oefen de erbijsom en erafsom tot 50
In de mix
|
1.
29 + 14 =
2
43
|
2.
1 – 1 =
2
0
|
3.
32 + 17 =
49
2
|
4.
39 – 14 =
25
2
|
|
5.
7 + 35 =
42
2
|
6.
29 – 14 =
15
1
|
7.
45 – 30 =
1
15
|
8.
45 + 4 =
49
2
|
|
9.
34 + 8 =
42
2
|
10.
13 – 4 =
1
9
|
11.
3 + 3 =
6
1
|
12.
17 – 7 =
1
10
|
|
13.
20 – 8 =
12
1
|
14.
34 – 21 =
13
1
|
15.
37 + 1 =
38
2
|
16.
31 + 17 =
2
48
|
|
17.
12 – 12 =
0
2
|
18.
3 – 0 =
1
3
|
19.
25 – 3 =
22
2
|
20.
20 + 8 =
28
2
|