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3 cijfers X 2 cijfers met hulp [1]

3 cijfers X 2 cijfers met hulp [1]

 
1 6 1
1 4 ×
4 × 1 = 4
4 × 60 = 2 4 0
4 × 100 = 4 0 0
10 × 1 =
10
10 × 60 =
600
10 × 100 =
1000
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