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