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3 cijfers X 3 cijfers met hulp [1]

3 cijfers X 3 cijfers met hulp [1]

 
3 5 5
1 8 7 ×
7 × 5 = 3 5
7 × 50 = 3 5 0
7 × 300 = 2 1 0 0
80 × 5 = 4 0 0
80 × 50 = 4 0 0 0
80 × 300 = 2 4 0 0 0
100 × 5 =
500
100 × 50 =
5000
100 × 300 =
30000
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