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3 cijfers X 3 cijfers met hulp [2]

3 cijfers X 3 cijfers met hulp [2]

 
5 7 5
6 5 9 ×
9 × 5 = 4 5
9 × 70 = 6 3 0
9 × 500 = 4 5 0 0
50 × 5 =
250
50 × 70 =
3500
50 × 500 =
25000
600 × 5 =
3000
600 × 70 =
42000
600 × 500 =
+ 300000
378925