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3 cijfers X 2 cijfers met hulp [1]

3 cijfers X 2 cijfers met hulp [1]

 
1 7 5
1 6 ×
6 × 5 = 3 0
6 × 70 = 4 2 0
6 × 100 = 6 0 0
10 × 5 =
50
10 × 70 =
700
10 × 100 =
1000
2800