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3 cijfers X 2 cijfers met hulp [1]

3 cijfers X 2 cijfers met hulp [1]

 
1 5 2
1 1 ×
1 × 2 = 2
1 × 50 = 5 0
1 × 100 = 1 0 0
10 × 2 =
20
10 × 50 =
500
10 × 100 =
1000
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