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