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