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