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