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