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3 cijfers X 3 cijfers met hulp [3]

3 cijfers X 3 cijfers met hulp [3]

 
2 3 4
1 3 2 ×
2 × 4 =
8
2 × 30 =
60
2 × 200 =
400
30 × 4 =
120
30 × 30 =
900
30 × 200 =
6000
100 × 4 =
400
100 × 30 =
3000
100 × 200 =
+ 20000
30888