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3 cijfers X 2 cijfers met hulp [1]

3 cijfers X 2 cijfers met hulp [1]

 
5 3 5
4 5 ×
5 × 5 = 2 5
5 × 30 = 1 5 0
5 × 500 = 2 5 0 0
40 × 5 =
200
40 × 30 =
1200
40 × 500 =
20000
24075