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