Oefen de erbijsommen tot 20
Erbijsommen
|
1.
15 + 5 =
|
2.
15 + 3 =
|
3.
15 + 0 =
|
|
4.
13 + 3 =
|
5.
20 + 0 =
|
6.
12 + 6 =
|
|
7.
6 + 7 =
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8.
10 + 0 =
|
9.
14 + 5 =
|
|
10.
3 + 16 =
|
11.
9 + 4 =
|
12.
16 + 2 =
|
|
13.
10 + 7 =
|
14.
13 + 0 =
|
15.
11 + 8 =
|
|
16.
6 + 12 =
|
17.
10 + 8 =
|
18.
16 + 3 =
|
|
19.
15 + 0 =
|
20.
1 + 15 =
|
21.
11 + 9 =
|
|
22.
18 + 0 =
|
23.
10 + 6 =
|
24.
3 + 1 =
|
|
25.
14 + 0 =
|
26.
2 + 6 =
|
27.
14 + 1 =
|
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28.
1 + 16 =
|
29.
17 + 2 =
|
30.
8 + 3 =
|
|
31.
15 + 3 =
|
32.
17 + 3 =
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33.
10 + 8 =
|