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3 cijfers X 3 cijfers met hulp [3]

3 cijfers X 3 cijfers met hulp [3]

 
1 5 4
2 5 2 ×
2 × 4 =
8
2 × 50 =
100
2 × 100 =
200
50 × 4 =
200
50 × 50 =
2500
50 × 100 =
5000
200 × 4 =
800
200 × 50 =
10000
200 × 100 =
+ 20000
38808