Oefen de erbijsom en erafsom tot 20
In de mix
|
1.
7 + 0 =
7
1
|
2.
8 – 8 =
2
0
|
3.
5 + 6 =
11
1
|
4.
19 – 9 =
1
10
|
|
5.
19 – 5 =
1
14
|
6.
19 – 9 =
1
10
|
7.
10 + 8 =
2
18
|
8.
9 + 5 =
14
1
|
|
9.
9 – 2 =
7
1
|
10.
11 – 6 =
5
1
|
11.
4 + 6 =
1
10
|
12.
19 + 0 =
19
2
|
|
13.
6 – 0 =
6
1
|
14.
7 + 12 =
2
19
|
15.
6 – 6 =
2
0
|
16.
15 – 2 =
1
13
|
|
17.
6 – 4 =
1
2
|
18.
20 – 16 =
1
4
|
19.
3 + 4 =
7
1
|
20.
3 + 3 =
6
1
|