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3 cijfers X 3 cijfers met hulp [3]

3 cijfers X 3 cijfers met hulp [3]

 
3 9 2
2 6 6 ×
6 × 2 =
12
6 × 90 =
540
6 × 300 =
1800
60 × 2 =
120
60 × 90 =
5400
60 × 300 =
18000
200 × 2 =
400
200 × 90 =
18000
200 × 300 =
+ 60000
104272