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3 cijfers X 3 cijfers met hulp [3]

3 cijfers X 3 cijfers met hulp [3]

 
3 2 9
3 6 1 ×
1 × 9 =
9
1 × 20 =
20
1 × 300 =
300
60 × 9 =
540
60 × 20 =
1200
60 × 300 =
18000
300 × 9 =
2700
300 × 20 =
6000
300 × 300 =
+ 90000
118769