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3 cijfers X 3 cijfers met hulp [3]

3 cijfers X 3 cijfers met hulp [3]

 
2 7 6
2 9 5 ×
5 × 6 =
30
5 × 70 =
350
5 × 200 =
1000
90 × 6 =
540
90 × 70 =
6300
90 × 200 =
18000
200 × 6 =
1200
200 × 70 =
14000
200 × 200 =
+ 40000
81420