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