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