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3 cijfers X 3 cijfers met hulp [1]

3 cijfers X 3 cijfers met hulp [1]

 
2 4 4
2 6 3 ×
3 × 4 = 1 2
3 × 40 = 1 2 0
3 × 200 = 6 0 0
60 × 4 = 2 4 0
60 × 40 = 2 4 0 0
60 × 200 = 1 2 0 0 0
200 × 4 =
800
200 × 40 =
8000
200 × 200 =
+ 40000
64172