Oefenen met erbij en eraf tot 20
In de mix
|
1.
19 – 15 =
1
2
4
3
|
2.
12 + 3 =
15
3
2
1
|
3.
19 – 1 =
18
2
3
4
|
4.
6 – 0 =
1
2
3
6
|
|
5.
16 – 7 =
9
3
2
1
|
6.
20 + 0 =
20
2
3
4
|
7.
18 + 0 =
3
4
2
18
|
8.
1 – 0 =
2
4
3
1
|
|
9.
12 – 6 =
2
1
6
3
|
10.
2 – 2 =
0
2
4
3
|
11.
15 + 2 =
17
4
2
3
|
12.
14 – 4 =
10
3
2
1
|
|
13.
7 – 2 =
1
3
2
5
|
14.
20 + 0 =
2
4
20
3
|
15.
1 – 1 =
4
2
3
0
|
16.
10 + 5 =
1
2
15
3
|
|
17.
10 – 2 =
1
8
2
3
|
18.
4 – 2 =
3
1
2
4
|
19.
10 + 8 =
18
2
3
4
|
20.
18 + 0 =
3
4
2
18
|