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3 cijfers X 3 cijfers met hulp [2]

3 cijfers X 3 cijfers met hulp [2]

 
1 2 3
2 2 6 ×
6 × 3 = 1 8
6 × 20 = 1 2 0
6 × 100 = 6 0 0
20 × 3 =
60
20 × 20 =
400
20 × 100 =
2000
200 × 3 =
600
200 × 20 =
4000
200 × 100 =
+ 20000
27798