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