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3 cijfers X 2 cijfers met hulp [1]

3 cijfers X 2 cijfers met hulp [1]

 
2 5 3
2 6 ×
6 × 3 = 1 8
6 × 50 = 3 0 0
6 × 200 = 1 2 0 0
20 × 3 =
60
20 × 50 =
1000
20 × 200 =
4000
6578