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3 cijfers X 3 cijfers met hulp [3]

3 cijfers X 3 cijfers met hulp [3]

 
1 4 6
2 9 3 ×
3 × 6 =
18
3 × 40 =
120
3 × 100 =
300
90 × 6 =
540
90 × 40 =
3600
90 × 100 =
9000
200 × 6 =
1200
200 × 40 =
8000
200 × 100 =
+ 20000
42778