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3 cijfers X 3 cijfers met hulp [3]

3 cijfers X 3 cijfers met hulp [3]

 
1 5 7
1 8 2 ×
2 × 7 =
14
2 × 50 =
100
2 × 100 =
200
80 × 7 =
560
80 × 50 =
4000
80 × 100 =
8000
100 × 7 =
700
100 × 50 =
5000
100 × 100 =
+ 10000
28574