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3 cijfers X 2 cijfers met hulp [2]

3 cijfers X 2 cijfers met hulp [2]

 
6 4 5
5 7 ×
7 × 5 =
35
7 × 40 =
280
7 × 600 =
4200
50 × 5 =
250
50 × 40 =
2000
50 × 600 =
+ 30000
36765