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