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