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3 cijfers X 2 cijfers met hulp [2]

3 cijfers X 2 cijfers met hulp [2]

 
3 1 7
4 6 ×
6 × 7 =
42
6 × 10 =
60
6 × 300 =
1800
40 × 7 =
280
40 × 10 =
400
40 × 300 =
+ 12000
14582