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3 cijfers X 2 cijfers met hulp [1]

3 cijfers X 2 cijfers met hulp [1]

 
4 5 4
3 2 ×
2 × 4 = 8
2 × 50 = 1 0 0
2 × 400 = 8 0 0
30 × 4 =
120
30 × 50 =
1500
30 × 400 =
12000
14528