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3 cijfers X 2 cijfers met hulp [1]

3 cijfers X 2 cijfers met hulp [1]

 
2 3 8
5 7 ×
7 × 8 = 5 6
7 × 30 = 2 1 0
7 × 200 = 1 4 0 0
50 × 8 =
400
50 × 30 =
1500
50 × 200 =
10000
13566