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