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