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