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3 cijfers X 2 cijfers met hulp [2]

3 cijfers X 2 cijfers met hulp [2]

 
4 6 5
3 1 ×
1 × 5 =
5
1 × 60 =
60
1 × 400 =
400
30 × 5 =
150
30 × 60 =
1800
30 × 400 =
+ 12000
14415