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3 cijfers X 3 cijfers met hulp [3]

3 cijfers X 3 cijfers met hulp [3]

 
2 4 1
2 6 8 ×
8 × 1 =
8
8 × 40 =
320
8 × 200 =
1600
60 × 1 =
60
60 × 40 =
2400
60 × 200 =
12000
200 × 1 =
200
200 × 40 =
8000
200 × 200 =
+ 40000
64588