Maak de som uit de tafel van 10 kloppend
Tafels
1.
×
=
10
3
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2.
×
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10
9
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3.
×
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10
8
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4.
×
=
10
3
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5.
×
=
10
2
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6.
×
=
10
10
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7.
×
=
10
2
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8.
×
=
10
7
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9.
×
=
10
10
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10.
×
=
10
10
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11.
×
=
10
4
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12.
×
=
10
2
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13.
×
=
10
8
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14.
×
=
10
7
________
15.
×
=
10
9
________
16.
×
=
10
9
________
17.
×
=
10
6
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18.
×
=
10
9
________
19.
×
=
10
5
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20.
×
=
10
8
________
21.
×
=
10
7
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22.
×
=
10
1
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23.
×
=
10
10
________
24.
×
=
10
7
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