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3 cijfers X 2 cijfers met hulp [1]

3 cijfers X 2 cijfers met hulp [1]

 
5 9 8
3 8 ×
8 × 8 = 6 4
8 × 90 = 7 2 0
8 × 500 = 4 0 0 0
30 × 8 =
240
30 × 90 =
2700
30 × 500 =
15000
22724