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3 cijfers X 3 cijfers met hulp [3]

3 cijfers X 3 cijfers met hulp [3]

 
1 3 7
3 8 2 ×
2 × 7 =
14
2 × 30 =
60
2 × 100 =
200
80 × 7 =
560
80 × 30 =
2400
80 × 100 =
8000
300 × 7 =
2100
300 × 30 =
9000
300 × 100 =
+ 30000
52334