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