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3 cijfers X 2 cijfers met hulp [1]

3 cijfers X 2 cijfers met hulp [1]

 
2 5 4
4 8 ×
8 × 4 = 3 2
8 × 50 = 4 0 0
8 × 200 = 1 6 0 0
40 × 4 =
160
40 × 50 =
2000
40 × 200 =
8000
12192